Malicious PDF — malware analysis report

Static analysis result for SHA-256 8d6646cdfef08939…

MALICIOUS

PDF

39.8 KB Created: 2020-08-19 02:43:00 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-09
MD5: dd0c3cdb9032e1d6c279fdfc11b4915b SHA-1: 54e37462c79824c7b5c96a521fefe2e8213b828d SHA-256: 8d6646cdfef0893996ee5d9e4987253500be1307126d0976638699361aee3ecb
194 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Phishing: Spearphishing Attachment T1204.002 Malicious Link

The PDF file contains a large number of embedded links, many of which point to Shopify domains hosting other PDFs, suggesting a link farm for SEO manipulation. Crucially, one of these links redirects to a known malicious domain, ttraff.com, which is likely used to deliver a secondary payload. The ML classifier also strongly flagged this PDF as malicious.

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

Heuristics 5

  • 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.
  • 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.com/pify?keyword=ball+bricks+breaker+mod+star+apk In PDF document text
    • http://files.woodridgeart.com/uploads/1/3/0/7/130740596/5560336.pdfIn PDF document text
    • http://files.townofnewberlin.org/uploads/1/3/1/4/131407818/pijituvezug.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/1/0431/4166/0826/files/egypt_pyramids_history_in_telugu.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/8191/5804/files/studio_ghibli_piano_sheet_music_advanced.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/3708/2271/files/jurnal_internasional_akuntansi_keperilakuan.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/5318/7221/files/97562988781.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/0176/6310/files/54742831843.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0436/6221/3270/files/neoliberalismo_en_mexico_ensayo.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/4691/8551/files/social_factors_affecting_consumer_buying_behaviour.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/0799/0169/files/44134312199.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/3127/2346/files/january_2020_calendar_telugu.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
    • 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 7

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

Full JSON: related samples API

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00004729.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x4729 5472 bytes
SHA-256: 23a4ad5cb7a529c213b6cf63adcf8cfbae009033596110ba0e1861f7e6d91fdf
font_01_sfnt_off000059a1.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x59A1 10344 bytes
SHA-256: 3dc6590a56bc81a4ffaf9f3ef68d2040dde5b65027a40341d1c1351e918d7d99
font_02_sfnt_off00007d5d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7D5D 16160 bytes
SHA-256: 49898e49e877ec90855fa0b20ec776352fbbc9c6da67f9354d1218dc46407470

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