Malicious PDF — malware analysis report

Static analysis result for SHA-256 6d731464cd9e6b4b…

MALICIOUS

PDF

51.0 KB Created: 2020-08-07 12:42:58 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-09
MD5: a2f460e508fe2181b535ea5371a49069 SHA-1: 03581bab487cf3ba4f070c9c9dcabb9418f7d7fe SHA-256: 6d731464cd9e6b4b31d71a139d23e5e7ff3336bcef41bb0d59d3850143277804
194 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1059.007 JavaScript

The PDF contains numerous links, many pointing to a redirector service, suggesting a link farm or phishing campaign. The primary malicious URL identified is https://ttraff.ru/pify?keyword=anton+aubanell+pdf, which is flagged as a malicious redirector. The document body, though heavily obfuscated, contains references to this malicious URL and other benign-looking PDF links, likely intended to disguise the malicious intent. The ML classifier strongly indicates maliciousness.

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.ru/pify?keyword=anton+aubanell+pdf In PDF document text
    • http://files.estherwayne.com/uploads/1/3/2/7/132740291/9042839.pdfIn PDF document text
    • http://xagefi.theprobet.com/uploads/1/3/0/9/130969744/wibaposipinatub-sanivuvarivim-nivapodexin-sovupez.pdfIn PDF document text
    • http://files.mylifebuilder.org/uploads/1/3/2/6/132680932/6235604.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://www.daltonmaag.com/In PDF document text
    • https://cdn.shopify.com/s/files/1/0433/6212/3941/files/50438895552.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/8027/8426/files/lomozej.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/2971/7407/files/73384417404.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/2992/0930/files/26313688776.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/7265/1413/files/target_band_7_ielts_academic_module_download.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/2830/8387/files/porsche_buyer_s_guide.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0440/5490/4997/files/aatrox_build_s7.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/0484/5465/files/rojogumade.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/2964/2911/files/51247281261.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/4542/0188/files/63863158054.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/1734/6965/files/69997523645.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/2476/9436/files/kefavo.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/0913/0143/files/18913757289.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 4

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_off00007e1d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7E1D 4724 bytes
SHA-256: 8565740c239673df5f281b43bd5135ad4f2d832a066e6ceac2547d7f47e8e3f3
font_01_sfnt_off00008e39.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8E39 10120 bytes
SHA-256: 8d488c7451071e4683959776d5bf5c61351fee368797e2ae3e52cb8335624491
font_02_sfnt_off0000b0db.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xB0DB 4324 bytes
SHA-256: 1158d95dac44631f497756703988ba3645251422e7ff0015d3fca430225e7c3e

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