Malicious PDF — malware analysis report

Static analysis result for SHA-256 3f0990af01efa9a7…

MALICIOUS

PDF

60.1 KB Created: 2020-08-09 13:12:57 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-09
MD5: a4ea67c046007fc7463b576bea13c4ce SHA-1: f985c09ef0f59a0117b8614fcaebc484c098b954 SHA-256: 3f0990af01efa9a7c72899cd9f119661c81e6220d3da46800e489e9d42cc887c
194 Risk Score

Malware Insights

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

The PDF contains a link farm and a malicious redirector URL, indicating a phishing or scam attempt. The document body, though heavily corrupted, contains text fragments and URLs that suggest a lure related to a 'pci b pharm syllabus pdf'. The primary malicious IOC is the redirector URL, which likely leads to a further stage of the attack. No scripts were extracted from this sample.

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=pci+b+pharm+syllabus+pdf In PDF document text
    • http://files.arenalrainforestproperties.com/uploads/1/3/2/6/132695543/tefelizaxoxut.pdfIn PDF document text
    • http://takuze.michaeljaigrant.com/uploads/1/3/0/7/130776791/16289f.pdfIn PDF document text
    • http://files.animalcarecenterofhudson.com/uploads/1/3/0/7/130739021/2a3435b9.pdfIn PDF document text
    • http://fiwef.renopopwarner.com/uploads/1/3/0/7/130776445/jinazurelixeru_famitudox_terexez_kilozuxowed.pdfIn PDF document text
    • http://files.eileenreynolds.com/uploads/1/3/0/7/130738639/gilonutuzev_tasel_gujirofi_kumofutovukin.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/1/0428/9835/8432/files/tiwimuz.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/3146/1016/files/vibumu.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/1338/1028/files/lefijotijuzagekobov.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/7623/1072/files/82797251174.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/0816/2981/files/zixejibobufiborikagen.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/6108/4322/files/sociology_of_education_questions_and_answers.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/7797/5717/files/50731695943.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/1251/4201/files/odisha_pin_code.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/1311/1961/files/87507682658.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0450/6189/8390/files/believer_s_bible_commentary.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/3926/8769/files/75985659084.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/0709/0581/files/85850121193.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 5

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_off0000a18a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xA18A 5640 bytes
SHA-256: 20f781cf15b65114a1d82e0660cc813d72a3b570f69e7a0f3aca5af9fec33157
font_01_sfnt_off0000b486.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xB486 14864 bytes
SHA-256: 0c7b9f75245eeeed314bd5645dd3380d4f9fed6f1966ebc8ae044691c321c1c5

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