Malicious PDF — malware analysis report

Static analysis result for SHA-256 a2c2901867549e32…

MALICIOUS

PDF

40.5 KB Created: 2020-08-20 20:48:05 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-09
MD5: 98bb2b5065a304399816fc3fe67e9cef SHA-1: b748803780f6377c437c21bc8ff2e7c940000776 SHA-256: a2c2901867549e32d6880bc60503274c992efce6a81a554df49901a1f79a61b1
194 Risk Score

Malware Insights

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

This PDF file was flagged as malicious by a machine learning classifier and contains a critical heuristic indicating it's a redirector link. The document body, though heavily obfuscated, contains a URL that appears to be a lure for a malicious redirector. The PDF also contains a large number of embedded links, many pointing to Shopify domains, suggesting a link farm or SEO poisoning tactic to distribute malicious content.

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.com/pify?keyword=anatomical+terms+positions+worksheet In PDF document text
    • http://files.wolfespringfarm.com/uploads/1/3/0/8/130814459/vawazo.pdfIn PDF document text
    • http://kagexi.jolttherapytool.com/uploads/1/3/1/4/131454057/lulibilolebav-fisaba-koferuzixeviji-noxunut.pdfIn PDF document text
    • http://vunereg.amreetakaur.com/uploads/1/3/1/0/131070805/e244475f3297b83.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/1/0431/6528/6564/files/juvisamuribebena.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/9714/4990/files/85822930505.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0444/4625/3222/files/hindu_baby_girl_names_starting_with_m.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/3077/2892/files/14214912628.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0439/9028/6494/files/56088229295.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/6728/5408/files/bulozimodijovomujuj.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/0652/4566/files/61497729768.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0440/8918/0310/files/watch_john_carter_online_free.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0436/4288/0160/files/in_the_summertime_chords.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/6498/2693/files/78255902529.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/2713/5640/files/spiritual_meaning_of_months_of_the_year.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 2

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_off00006083.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6083 5320 bytes
SHA-256: 6b49577901deccd6060e689b2c92d737d0ef5d5e3debbbc19c01a26e6b076ad7
font_01_sfnt_off00007276.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7276 10308 bytes
SHA-256: 2293bf9736071673acb00a0ddbdcb3f924e7258c1f4748e987c90276539f1203

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