Malicious PDF — malware analysis report

Static analysis result for SHA-256 3793b40d3bdc65d0…

MALICIOUS

PDF

49.4 KB Created: 2020-08-12 17:01:41 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-09
MD5: b92e2c4803e50877f6efd07795e493e3 SHA-1: 542456f4949c4c3c53beb2a9ae09d111acb1daa6 SHA-256: 3793b40d3bdc65d08ae8ffaa0d560c44e360e6727ee0995e1153afad05ba7575
194 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1204.002 Malicious Link

The PDF contains a large number of embedded links, many pointing to Shopify domains, but the primary link directs to a known malicious redirector. The document body, though heavily obfuscated, contains the text 'Introduction to germanic philology pdf' and the malicious URL, suggesting a lure to a malicious site disguised as academic content. No scripts were extracted from this sample.

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/wb?keyword=introduction%20to%20germanic%20philology%20pdf In PDF document text
    • http://files.roxbury5k.com/uploads/1/3/1/4/131408970/2952171.pdfIn PDF document text
    • http://files.rockgardenapartmentspefkos.com/uploads/1/3/0/7/130740517/zomagelujudeme.pdfIn PDF document text
    • http://sefozevi.cpsschoolcounseling.com/uploads/1/3/1/4/131452883/gagafesegetavez-jowiz.pdfIn PDF document text
    • http://files.drsusankentarce.com/uploads/1/3/0/7/130775649/wabividavibomedux.pdfIn PDF document text
    • http://files.deekincade.com/uploads/1/3/0/7/130740069/7955382.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/1/0431/5018/0514/files/gapumilajixonufa.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/2303/1720/files/pufarokofinagonopo.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/9085/3534/files/90786537258.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/1333/3411/files/libesizimowofajomesabive.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/9096/8729/files/84431210863.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0440/4166/6710/files/37701017825.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/4431/4011/files/sanot.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/0003/7527/files/zakinod.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/7881/9735/files/94754057580.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/3439/5295/files/zokivu.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/5469/3541/files/durokazujogezasugoral.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/3080/5669/files/50607636565.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/8096/5534/files/a_handbook_of_pronunciation_of_english_words.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: drsusankentarce.com 5 samples

Related samples 8

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Full JSON: related samples API

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00007167.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7167 5428 bytes
SHA-256: 4d5ba72cda2dd177f86f2e172be9cb7fbb64dab77a3588eab0e46fa51882d575
font_01_sfnt_off000083bc.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x83BC 16468 bytes
SHA-256: 6f2877f3709e55b3a62dfa47c2a517a2bfcd7f2e772c75b83f263fbbdc74a7bc

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