Malicious PDF — malware analysis report

Static analysis result for SHA-256 6f143bb20d2420fb…

MALICIOUS

PDF

38.4 KB Created: 2020-08-04 15:23:44 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 3be8ce5876a6fa376513a68feb3d29c0 SHA-1: c5d95b3febe92b5a9c95affd657d091c4d09373e SHA-256: 6f143bb20d2420fbd9d55d8311c5e710b76fcf0b45bf35f77a34d9431e5ae8ed
194 Risk Score

Malware Insights

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

The PDF contains numerous links, many of which point to a redirector service that is known to host malicious content. The document body itself contains the primary redirector URL, suggesting a phishing or scam attempt to trick users into downloading potentially harmful files. The ML classifier also strongly indicated maliciousness.

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=bioelectronics+book+pdf In PDF document text
    • http://files.inspiring-senses.com/uploads/1/3/0/8/130874189/c90f744112.pdfIn PDF document text
    • http://files.climatetippingpoints.com/uploads/1/3/2/7/132710700/5443381.pdfIn PDF document text
    • http://files.sthilaryhouse.co.uk/uploads/1/3/1/6/131636889/mubumaribiminatores.pdfIn PDF document text
    • http://files.pblconnections.com/uploads/1/3/0/9/130969931/677994.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/1/0428/7902/5318/files/banutorosesog.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/6544/2457/files/8763109904.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/5276/9192/files/mazasalekisupivujimesuzap.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/8242/4215/files/52910175666.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0440/8249/5640/files/best_push_to_talk_key.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/7054/6329/files/velarisezumolizisulija.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/8565/2375/files/47225455153.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/5799/4138/files/xekerenijigefeg.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/8344/7968/files/nurisojuvitojetezudatu.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
🗂 Part of campaign: inspiring-senses.com 3 samples

Related samples 4

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_off00005880.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5880 5192 bytes
SHA-256: 02ef6afee961564540be7ab1ab84b8d7225bdf1f0303160792a75ac40104bb3a
font_01_sfnt_off00006a3a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6A3A 10224 bytes
SHA-256: cf2b29b134282c8cbf2a79a737d90e0b878c48605eefae1aa9fb017f82b8f1ad

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