Malicious PDF — malware analysis report

Static analysis result for SHA-256 82d3d7512072e29b…

MALICIOUS

PDF

41.4 KB Created: 2020-08-11 22:49:05 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 5f1f4e464729b2e0154bf04ec9752bfb SHA-1: 1e4eb92efdffba4cea82a258d1290dffed7f1025 SHA-256: 82d3d7512072e29bd36f8d8346074299cee5c65eab6264168d1f1a80bb0ff990
194 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains numerous links designed to appear as legitimate downloads, but they redirect to a malicious website. The primary redirector URL is https://ttraff.com/wb?keyword=tipos%20de%20microorganismos%20en%20el%20agua%20pdf, which is flagged as malicious. This indicates a phishing or scam attempt leveraging SEO tactics to distribute malware.

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/wb?keyword=tipos%20de%20microorganismos%20en%20el%20agua%20pdf In PDF document text
    • http://files.abelcider.net/uploads/1/3/1/8/131857115/rabiborexe-mevatafaxu-sikipokexa.pdfIn PDF document text
    • http://davug.pvgtf.com/uploads/1/3/2/6/132695818/dipifuvuxezasev-muxopokag-pezezajuk.pdfIn PDF document text
    • http://files.amcsouth.ca/uploads/1/3/0/7/130775970/buler.pdfIn PDF document text
    • http://xizogu.raresilentfilms.com/uploads/1/3/1/8/131871721/9154790.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/1/0434/6213/1869/files/disoruzutonoderijabif.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/7827/7525/files/cemu_usb_helper.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/5593/9733/files/61254601067.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/lewajoranuputefikilos.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/4246/3126/files/quality_manager_roles_and_responsibilities.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/1338/1028/files/59324554090.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/9925/1093/files/xasokogudenes.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/3346/8821/files/3646926072.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/5429/3402/files/napaxijala.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0438/6013/2005/files/rufalufenoxumu.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/5812/5207/files/53929138914.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/2807/9004/files/kaduligoxomejeb.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0427/8157/3279/files/11519784226.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 3

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

Full JSON: related samples API

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00006274.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6274 5424 bytes
SHA-256: 73f1a9d8ff8dac9911a81bdceec185eb42eb30095ac80d937401ce8d5a96afa2
font_01_sfnt_off000074c3.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x74C3 10432 bytes
SHA-256: 3846f1cbcdd6d4c3a06a390ad95af76dae0e08357a21c42700d25040a1c00fa3

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