Malicious PDF — malware analysis report

Static analysis result for SHA-256 76361b980fb8342f…

MALICIOUS

PDF

55.6 KB Created: 2020-08-15 02:57:14 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-09
MD5: d46661ef1445eb5d1e791f34b3063596 SHA-1: 9463a8ea4dc80f3b427e87052ee726363ed931f4 SHA-256: 76361b980fb8342fb07b306c122b9a0f752e7d74c7f332966b7ad703898eda68
194 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains a link to a known malicious redirector, ttraff.cc, which is likely part of an SEO link farm designed to phish users with fake download lures. The ML classifier also strongly indicated maliciousness. The document body, though heavily obfuscated, contains the redirector URL and references to 'conjugaison anglaise tableau pdf', suggesting a lure for language learning materials.

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/wb?keyword=conjugaison%20anglaise%20tableau%20pdf In PDF document text
    • http://tibalib.mavensmarket.com/uploads/1/3/1/4/131407921/rarabositeweva_pumivax.pdfIn PDF document text
    • http://files.pinmetalup.com/uploads/1/3/0/9/130969548/7383251.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/1/0428/5900/4070/files/75785887294.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/5253/1869/files/dibip.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0459/2258/2679/files/chrono_trigger_rom_snes_espaol_android.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/1301/2641/files/zuroziwedunajuwu.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0438/5685/5190/files/asma_en_adultos_tratamiento.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0438/8408/5416/files/tekubivogidiz.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0444/3511/2103/files/probability_worksheet_grade_7.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/1363/6259/files/naxopikovaverumiz.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/1800/2340/files/xikabiwepelaxemimavobasas.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/1234/9334/files/30435690970.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/9945/5642/files/pumasufa.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
🗂 Part of campaign: pinmetalup.com 3 samples

Related samples 8

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_off000085b2.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x85B2 5236 bytes
SHA-256: d8e42e393f04af6910a357f53691d2d0f6550bad9ab51eddc0fc91ee320f419b
font_01_sfnt_off0000978e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x978E 1800 bytes
SHA-256: daad3f347a4f42f432ee9983e619a7c063e36761dba5934b469418034847e28e
font_02_sfnt_off0000a01c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xA01C 15828 bytes
SHA-256: 9b628eddc4e4ea0f2ff1bd469607b177ffdfb11c5c21f49e53e82c06258c22ad

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