Malicious PDF — malware analysis report

Static analysis result for SHA-256 c82ed2bdb52f11cb…

MALICIOUS

PDF

68.9 KB Created: 2020-08-10 16:54:19 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-07
MD5: 224f9a048e41eff718a33efab77957bc SHA-1: 1309369f87e376c2a04b2a190b292258f7e0d5e4 SHA-256: c82ed2bdb52f11cb40df6c9d7b735ac763a5d2e4f9978e1298fca591ab88d20d
202 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1059.001 PowerShell T1204.002 Malicious Link

The PDF contains numerous embedded links, with a critical heuristic firing for a malicious redirector at 'https://ttraff.ru/pify?keyword=becker+cpa+far+pdf'. Another critical heuristic identified a PDF link farm, suggesting a coordinated effort to distribute malicious content. The document body, though heavily obfuscated, contains references to CPA exam materials and the malicious URL, reinforcing the lure. No scripts were extracted, but the primary attack vector appears to be the malicious redirection link.

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

Heuristics 6

  • PDF links to known malicious redirector infrastructure critical PDF_MALICIOUS_REDIRECTOR_LINK
    PDF contains a clickable URI to redirector infrastructure used by a known malicious PDF SEO/adware delivery campaign. These documents typically rely on user interaction and redirect chains rather than a PDF parser vulnerability.
  • Small PDF contains mass external PDF link farm critical PDF_SEO_LINK_FARM
    Small PDF contains many clickable external PDF links, mostly clustered on one host. This matches generated SEO/link-farm PDF carriers used to route users into malicious or unwanted-software delivery chains, rather than a normal document citation pattern.
  • Image lure linking to an SEO redirector (free-download phishing) high PDF_SEO_UTM_REDIRECTOR_LINK
    PDF embeds an image with little or no body text and a clickable link to a multi-word utm_term / FeedBurner-proxied SEO redirector — the 'free ebook / solution-manual / document download' phishing family that ranks for natural-language search queries and routes the user into a payload/redirect chain. The PDF carries no exploit; the risk is the linked destination. Flagged structurally (image lure + SEO redirector) so it does not depend on a ClamAV/ML signature, and regardless of how many filler text pages the lure carries.
  • Urgency / deadline lure low SE_URGENCY_LURE
    Document contains urgency or deadline language ('account will be terminated', 'action required within 24 hours', etc.) — useful context, but low-signal without other findings
  • Object number defined twice with different bodies info PDF_DUPLICATE_OBJ_BODY_INCREMENTAL
    The same indirect object (N G) is defined more than once with different body bytes. First-wins and last-wins readers will resolve different content, which is a parser-confusion shape used by targeted PDFs. Body-only differences are common in benign incremental updates, so severity is raised only when the duplicate carries active content.
  • Embedded URL info EMBEDDED_URL
    One or more URLs were extracted from the document. The URL itself is not a detection — see the per-URL labels for which channel (macro, JS, link annotation, document body, ...) reached each URL.
    URL https://ttraff.ru/pify?keyword=becker+cpa+far+pdf In PDF document text
    • http://litibujid.rikkiducornet.com/uploads/1/3/1/4/131438800/bevepedovunoriz.pdfIn PDF document text
    • http://files.killjoy.info/uploads/1/3/2/8/132816158/444fa6d86d0810f.pdfIn PDF document text
    • http://files.jimhinesdrums.com/uploads/1/3/0/8/130874204/lejuvuz.pdfIn PDF document text
    • http://delodig.mustbefrenchies.com/uploads/1/3/1/8/131871980/3fa43353ec6.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://cdn.shopify.com/s/files/1/0438/1586/2434/files/wileyplus_solution_manual.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/83260340608.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/8774/1607/files/xilemeragofivumepawuvepa.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/9906/2421/files/96680108694.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/0705/7825/files/tifalafedudutofi.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/1637/9816/files/61036578046.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0427/5752/1574/files/voluleguw.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/8716/6628/files/gurijukejim.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/9832/5663/files/menopa.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/2520/2325/files/dalaramepofibo.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/2651/3048/files/31869731644.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/9654/7230/files/65027357068.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0427/9356/6364/files/van_halen_diver_down_songs.pdfIn PDF document text
    • http://www.w3.org/1999/02/22-rdf-syntax-ns#In PDF document text
    • http://purl.org/dc/elements/1.1/In PDF document text
    • http://ns.adobe.com/pdf/1.3/In PDF document text
    • http://ns.adobe.com/xap/1.0/In PDF document text
    • http://ns.adobe.com/xap/1.0/mm/In PDF document text
    • http://ns.adobe.com/xap/1.0/rights/In PDF document text
    • https://savannah.gnu.org/projects/freefont/In PDF document text
    • http://www.gnu.org/licenses/In PDF document text
    • http://www.gnu.org/copyleft/gpl.htmlIn PDF document text
    • http://scripts.sil.org/OFLIn PDF document text
    • http://dejavu.sourceforge.netIn PDF document text
    • http://dejavu.sourceforge.net/wiki/index.php/LicenseIn PDF document text

Related samples 8

Ranked by shared artifacts, heuristics, extracted URLs, CVEs, and signatures.

Full JSON: related samples API

Extracted artifacts 5

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off000096a9.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x96A9 6548 bytes
SHA-256: b27c7a011d1e25a8740c16753f32df49003034e6b6973e84691b1598814ca5e7
font_01_sfnt_off0000a6ff.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xA6FF 5052 bytes
SHA-256: abb5427f6674dac207ae5bbd5a7cec81eea6400c37c72c07d74501b3acde80a1
font_02_sfnt_off0000b837.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xB837 2696 bytes
SHA-256: bc7b5360678e97545d5a0de25c338347910b848f4c1c3fcd8a41131fbe8ad81c
font_03_sfnt_off0000c3a8.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xC3A8 14140 bytes
SHA-256: faf678a3946ba2c5de62e6907b6b5e3fa106d1a912ed5d4072d5984f898f94a7
font_04_sfnt_off0000f0b1.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF0B1 16036 bytes
SHA-256: 35d3440dae1ebc896564e4e6f70ea95aa3a30a1ac603c7fffbb21b68b8b72e2f

Open this report in the interactive analyzer, or submit your own file for analysis.