Malicious PDF — malware analysis report

Static analysis result for SHA-256 57fe3eb35833666c…

MALICIOUS

PDF

40.4 KB Created: 2020-08-20 22:15:25 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-09
MD5: e1434e93f391b7107c337e0af4fc84e8 SHA-1: 132acb1c3b0914307fba3dc7a4fd4ff889df6c9f SHA-256: 57fe3eb35833666cd1b2f7b0be8456e4af32813f458b66ac9c9823ff359c99bb
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, a technique often used for SEO manipulation or to distribute malicious content. One of the primary links directs to a known malicious redirector, ttraff.ru. The document body, though heavily obfuscated, also contains URLs pointing to Shopify, suggesting a link farm or distribution network. The ML classifier strongly flagged this PDF as malicious.

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=vertical+history+timeline+template+word In PDF document text
    • http://sevome.stelizabethrap.com/uploads/1/3/2/7/132740961/1109923.pdfIn PDF document text
    • http://riberetib.bestofthemenu.com/uploads/1/3/2/6/132695832/puxuvafirajatu.pdfIn PDF document text
    • http://fubek.rosecitypepperheads.com/uploads/1/3/1/4/131438541/7331069.pdfIn PDF document text
    • http://files.spectrumvalue.com/uploads/1/3/0/7/130776602/2245115.pdfIn PDF document text
    • http://files.shipofimagination.com/uploads/1/3/1/3/131398025/5022954.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/1/0434/5823/2473/files/free_carrom_game_for_pc.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/0993/2440/files/zujudabinelive.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/2831/5288/files/87958384182.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/7026/7300/files/99379678329.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0427/8665/2316/files/my_play_store_pending.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/8558/6849/files/pesami.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/2816/9375/files/clinical_trial_protocol_template_uk.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/6572/9429/files/xoludurudebidigivagevafu.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/8212/0358/files/barcelo_bavaro_palace_map.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/5271/1581/files/runojoju.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0439/3598/9928/files/dasifusapimawofasubegoxex.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 5

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_off000060ce.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x60CE 5472 bytes
SHA-256: cc7e8d248d56eb1aa663f341c947fedda6fb604c62ad12d0cc57c68507a98472
font_01_sfnt_off00007350.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7350 9800 bytes
SHA-256: a7a43dbfc2149b8a5e6c2588cb9d1e779be8aba5c4e37f2ec042621cb8277e8c

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