Malicious PDF — malware analysis report

Static analysis result for SHA-256 b0c5736b571f4125…

MALICIOUS

PDF

91.6 KB Created: 2020-08-18 14:30:21 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-07
MD5: 13194e6158fbb345fdcd4e93e8efa8dc SHA-1: b48956a50a4ba93836a1fb7da999b2b15b1c5017 SHA-256: b0c5736b571f41250481383601da8b696f5fe98422ffa05865a3a83cf21d6bfb
194 Risk Score

Malware Insights

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

The PDF was flagged as malicious by a machine learning classifier and contains a critical heuristic indicating it links to known malicious redirector infrastructure. It also exhibits characteristics of a PDF link farm, with numerous embedded URLs pointing to external resources. The primary malicious IOC is the ttraff.cc redirector URL, which is likely used to funnel victims to a phishing or malware delivery site.

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.cc/pify?keyword=ocarina+of+time+n64 In PDF document text
    • http://files.eljefeoffshorefishing.com/uploads/1/3/0/8/130874207/makuparitota-rinazasutagi-rikasarobi.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/1/0434/3395/1399/files/krav_maga_training.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/7199/6053/files/54917705655.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0436/9979/8166/files/44897043098.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/3191/9765/files/xigara.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/6522/0003/files/konubifotomogasijevos.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/9127/1586/files/84638743509.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/7835/2022/files/lullaby_of_birdland_real_book.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/2154/1277/files/the_ritual_magic_manual_david_griffin.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/6917/6985/files/gapizukizinizevemusajome.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/9700/5981/files/ap_grama_sachivalayam_syllabus_2020_in_telugu.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/6458/1525/files/cqc_inspection_report_whipps_cross.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

Related samples 2

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_off0000fd75.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFD75 13784 bytes
SHA-256: 53be69fbe34d6acf4e2562dd2376df429702a643f3445a1ebed130f77911f30b
font_01_sfnt_off00012a0c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x12A0C 5084 bytes
SHA-256: 0946e01a344516ae9c84b61aacb0922dd1dbece0b30f492a71463ed49d0d01ae
font_02_sfnt_off00013b3f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x13B3F 11128 bytes
SHA-256: 80cb4ed30c8d469c9c5c997770a0dbf1656e6ec8f1d51afc693404059e24a8a1

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