Malicious PDF — malware analysis report

Static analysis result for SHA-256 795b5e1d614d8ba2…

MALICIOUS

PDF

40.2 KB Created: 2020-08-07 15:37:27 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-09
MD5: ae4389dace0c27a94267ad24eeb9b6ff SHA-1: 0a99e0759585a0108b1e49ca73a4f1dd03c43391 SHA-256: 795b5e1d614d8ba29d7837cab17df3f37ee1ab29fb88e1dcfe5bfc08b585fa42
194 Risk Score

Malware Insights

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

This PDF file contains numerous embedded links designed to create a link farm, directing users through a malicious redirector at 'ttraff.ru'. The document body, though heavily obfuscated, contains the same URL, suggesting a lure for users to click through to a potentially malicious site. The ML classifier strongly indicated maliciousness, and the PDF structure points towards a phishing or malware distribution attempt.

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=larutan+nutrisi+hidroponik+pdf In PDF document text
    • http://files.twc408.com/uploads/1/3/2/7/132712005/a0e58cd93.pdfIn PDF document text
    • http://files.yennang.com/uploads/1/3/1/3/131379059/820fe.pdfIn PDF document text
    • http://nipijov.sanfordwelcomecenter.com/uploads/1/3/1/6/131636664/lopedilada.pdfIn PDF document text
    • http://files.wanderlustironworks.com/uploads/1/3/1/4/131455475/f60ada.pdfIn PDF document text
    • http://files.bebettertherapies.com/uploads/1/3/1/4/131483217/sebaretav-gebogojolaw-refiwadafon-zatutovebe.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/1/0431/1315/2673/files/43949206531.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/1367/5928/files/key_informant_interview_definition.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/9221/3911/files/44018388556.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/0070/9791/files/37040117292.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/2633/3351/files/35925604669.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/5541/5445/files/lawefevikepabatonu.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/2588/2518/files/private_hottie_utopia.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/8127/7342/files/average_aptitude_tricks.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0438/5167/7856/files/zofogeroxovugubavowi.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0440/7836/6885/files/xedadugizejerezanitomu.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/6858/7174/files/dadofifuveminik.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 8

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_off00005fa4.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5FA4 5104 bytes
SHA-256: 10141e3435001658991a07ce58ca1cdd3b05c730059bb50ab184955ca7a62c36
font_01_sfnt_off000070fd.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x70FD 10256 bytes
SHA-256: 5f27e2f6fb3df335cb7589504d4b30d165fedf556deaada4b3b370aa5d641a99

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