Malicious PDF — malware analysis report

Static analysis result for SHA-256 107793228b0ac0ae…

MALICIOUS

PDF

42.0 KB Created: 2020-08-01 14:57:48 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-09
MD5: afa0d9a173846081da2d75b0785e1cdf SHA-1: 82a5f0ec6ec42c337d01f81ca52b2aab3e6d0ff3 SHA-256: 107793228b0ac0aeecbe8f0bc96200383db20f3d6b0b33eb02f1b238837cf247
194 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains numerous embedded links, many of which point to a redirector service known for malicious activity. The document body, though heavily obfuscated, contains a URL that matches the redirector found in the heuristics. This suggests the document is designed to lead users to malicious sites, likely for phishing or to download further malware.

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=factorio+5+to+4+balancer In PDF document text
    • http://files.withvsat.com/uploads/1/3/1/4/131452823/kafevena_vojixozowes_misirisukowose.pdfIn PDF document text
    • http://files.odensymposium.org/uploads/1/3/1/3/131383318/c94df407b75.pdfIn PDF document text
    • http://files.get2knowisi.org/uploads/1/3/0/7/130775002/jasofisijifeliragelo.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/1/0430/6498/3703/files/99991931636.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/9831/6707/files/99885968412.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/0046/2503/files/fofusiwep.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/2160/6818/files/58739257517.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/5868/3291/files/tuzunudem.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/7899/1518/files/wamupuzuxezufu.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/7427/3948/files/352770276.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/8030/3267/files/90289247061.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/0813/0213/files/25168684913.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/3729/4754/files/10273532643.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/2925/6613/files/61293136523.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0436/3039/5552/files/96616056876.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_off00006739.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6739 4920 bytes
SHA-256: a5348a472884b9043b54b897cf451d9479bdd2efb184c59568d692b2173b03ec
font_01_sfnt_off00007812.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7812 10372 bytes
SHA-256: e9c99de2adb4bcbcec9001ec70f183590a694f0d66db291d2f99586fbdb39ea1

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