Malicious PDF — malware analysis report

Static analysis result for SHA-256 6efabff6dbc18e00…

MALICIOUS

PDF

42.9 KB Created: 2020-08-28 06:14:26 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-09
MD5: aca0ca5a024a7df3893dfb48259b655a SHA-1: 6c0a5800eae69d2adc2c8ad655408b08d9a6950a SHA-256: 6efabff6dbc18e001a24330e6176d75c3d716092a02e8713f2e31b513032b31a
194 Risk Score

Malware Insights

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

The PDF contains numerous links to external PDF files, many hosted on Shopify, and a primary redirector URL. The heuristic firings indicate that the document is designed as a link farm to redirect users to malicious infrastructure, likely for phishing or malware distribution. The embedded document body text, though heavily obfuscated, contains the malicious redirector URL, suggesting an attempt to disguise the 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.cc/pify?keyword=craftsman+8.+5+hp+chipper+shredder In PDF document text
    • http://files.vmplf.com/uploads/1/3/1/6/131606818/aef02d7.pdfIn PDF document text
    • http://files.lisawarns.com/uploads/1/3/0/7/130738984/zamen-teguruxepo-mosejibabogosew.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/1/0447/2933/5962/files/libejemugezuvu.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/5313/8588/files/gilorivadoturajoxomud.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/0582/1599/files/12397047700.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/8421/8532/files/70296047881.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0451/0665/9493/files/ball_bearing_download.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0439/1344/5544/files/rukanunabopowoguvuwupevi.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/6756/2391/files/80376683887.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/9885/6867/files/bawivunobajanagamu.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0436/3816/1561/files/ahmedabad_city_map_hd.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/3602/4742/files/assassin_s_creed_identity_free_mob._org.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0469/5031/8241/files/furaberexepa.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/8789/6488/files/jugarefi.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 6

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_off000068fc.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x68FC 5616 bytes
SHA-256: e9996c13a7b543030a019d726835bade1fcc6e26fcd35cb1234d6230f8812c8c
font_01_sfnt_off00007be3.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7BE3 10032 bytes
SHA-256: 9c32bc7060adafafac9da85e5a2497503b97aa87b50ec1174aef2f7b0f371ad9

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