Malicious PDF — malware analysis report

Static analysis result for SHA-256 018603c84d859097…

MALICIOUS

PDF

44.7 KB Created: 2020-08-10 18:01:23 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-09
MD5: a57de37cc4e2eb7602552ccf570bd283 SHA-1: 630acbcf2002aae27abe8900df42e95cdd6733d7 SHA-256: 018603c84d85909703e254f974fc9e319ecd7b5dc608809282be66fb94e326f5
194 Risk Score

Malware Insights

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

The PDF contains multiple embedded links, including one pointing to a known malicious redirector infrastructure. The document body, though heavily obfuscated, contains text suggesting a lure related to 'herman bavinck books pdf'. The primary malicious link is https://ttraff.cc/pify?keyword=herman+bavinck+books+pdf, which is designed to redirect users to potentially harmful content. The presence of numerous external PDF links further indicates a link farm or phishing attempt.

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=herman+bavinck+books+pdf In PDF document text
    • http://files.merrysny.shop/uploads/1/3/1/4/131454503/kiwebaf_bopipifavetut_gagibav.pdfIn PDF document text
    • http://files.goodgirlsgonegrimm.com/uploads/1/3/0/7/130775768/jobaf-luxizosab-vabexufuvajet.pdfIn PDF document text
    • http://files.projectcarsesports.com/uploads/1/3/1/4/131455337/niwazubozebi_kebokokelevi_ronafasuzuda_lubebow.pdfIn PDF document text
    • http://files.soundisme.com/uploads/1/3/1/4/131453259/gufesomufo.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://www.daltonmaag.com/In PDF document text
    • https://cdn.shopify.com/s/files/1/0430/5492/3925/files/2686074089.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/5481/6665/files/ecological_adaptation_in_plants.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/0940/0214/files/92593446546.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/4567/3377/files/lorex_eco_stratus.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/1551/0938/files/bulfinch_s_mythology.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/2690/6264/files/boruvasoz.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0436/0064/2211/files/41611536534.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/37604868145.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/0596/8537/files/millionaire_next_door_summary.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/6819/4965/files/30949704903.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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00006471.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6471 5204 bytes
SHA-256: 70094e348bad793ed7dc9b0f0f284f9e3fd405f81070690dbbfaf783beae6431
font_01_sfnt_off000075ef.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x75EF 9904 bytes
SHA-256: ce22b2b25f076f7b995f3c99e64a21225572abe66b12fe6a6f2c807e9209d890
font_02_sfnt_off000097e5.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x97E5 4324 bytes
SHA-256: 7f6049e5011acf0e8581793f2bc2bb947aac2929fdb77abc318b2a6155c1ef71

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