Malicious PDF — malware analysis report

Static analysis result for SHA-256 9afaba55e6c82e0b…

MALICIOUS

PDF

37.1 KB Created: 2020-08-25 10:14:16 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 62a4a8e514fa25d4272537c3410f3322 SHA-1: bc601822b9af06a9f79bf53d3197d3d2cc566619 SHA-256: 9afaba55e6c82e0b98d77a7257babdb53bfc41c4ee7a7e747d5fb01ade9cc3c9
194 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1059.001 PowerShell

The PDF file contains a large number of embedded links, many of which point to external resources. One critical heuristic identified a link to a known malicious redirector infrastructure at `https://ttraff.ru/pify?keyword=biochemistry+h.+stephen+stoker+pdf+3rd+edition`. Another critical heuristic flagged the document as a link farm, with numerous links to shopify.com domains, likely intended to obscure the malicious redirector. The document body itself contains garbled text but includes the malicious URL and several benign-looking shopify URLs.

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=biochemistry+h.+stephen+stoker+pdf+3rd+edition In PDF document text
    • http://jujup.woofgangkennels.com/uploads/1/3/2/6/132682090/piferipo-folekapazu-jowiwaxiledo-linuguvasi.pdfIn PDF document text
    • http://files.lorenzoscarling.com/uploads/1/3/0/9/130969918/gufojonilugeko.pdfIn PDF document text
    • http://files.capillariesjournal.com/uploads/1/3/2/6/132680808/bb7260871b.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/1/0435/0679/4651/files/jedekisulopujigax.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/4874/7676/files/luxitoduxekavorel.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/3355/1260/files/diy_vacuum_form.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/bivunamu.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/2352/4259/files/bratstvo_crnog_bodea_free_download.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0438/3195/1517/files/materialismo_historico_y_dialectico.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/6948/8798/files/wemijuda.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/5507/7786/files/durifa.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0438/4178/1920/files/euclidean_algorithm_c.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/4555/1271/files/fafalomekoxe.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/6268/8918/files/candida_albicans.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/4418/3974/files/jolole.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 3

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_off000051d5.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x51D5 5564 bytes
SHA-256: 0d5c6bcaeb0d4d6ae0f68efcf95df7654c78e8cb0a57042518246ffd01b09a10
font_01_sfnt_off000064a8.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x64A8 10092 bytes
SHA-256: 94697580c89db56d8e9124e1d9a6475410c6da6151724c8d49f747939286a71c

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