Malicious PDF — malware analysis report

Static analysis result for SHA-256 6dc61c1d310a445e…

MALICIOUS

PDF

47.2 KB Created: 2020-08-25 15:11:32 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-09
MD5: e4c94ccb196628c1371957f7f6f5d4ac SHA-1: ac3061bf8171e0e3f2d221ddd7a11f5480737395 SHA-256: 6dc61c1d310a445eeda47256afdc1652e8f81c068bf4a0b8e3e8f2c21e4162b9
194 Risk Score

Malware Insights

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

The PDF contains numerous links, many of which point to a redirector service (ttraff.ru) that is flagged as malicious. The document body, though heavily obfuscated, contains text related to 'term loan' and the malicious URL, suggesting a phishing or scam lure. The presence of embedded URLs and the ML classifier's high confidence score indicate malicious intent.

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=term+loan+affect+in+balance+sheet In PDF document text
    • http://dasomemiw.mdlashesllc.com/uploads/1/3/2/7/132741508/xevekebem_suwurediju.pdfIn PDF document text
    • http://zisasafi.tobxi.com/uploads/1/3/1/6/131636725/41422d970.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/1/0429/6241/9863/files/monthly_panchang_calendar_2020.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/8759/3632/files/welaxutemiwe.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/7465/0261/files/lerufexirimuwisisukuned.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0466/2686/5317/files/kha_file_khng_cho_copy.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/9558/8002/files/88683178195.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0458/0625/6294/files/firoxilapogoseno.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/9629/4051/files/bellary_district_gazetteer.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/7026/7291/files/burrowers_2008_full_movie.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/4153/7696/files/excel_vba_full_tutorial.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/4891/8440/files/27958745689.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/5847/0813/files/48547618271.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/7003/7917/files/xusobek.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 7

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_off00007b59.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7B59 5208 bytes
SHA-256: 02b5b99122476ac46930deae3dba68fa7862b8f1bf27cf3692688e034d991da4
font_01_sfnt_off00008cde.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8CDE 10236 bytes
SHA-256: 089c191878d50f99b52572740ca26bd597ab98ad299450f3789c0edd29917d5b

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