Malicious PDF — malware analysis report

Static analysis result for SHA-256 6f0fa74ebef5e71a…

MALICIOUS

PDF

36.0 KB Created: 2020-08-14 21:27:09 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-09
MD5: a5cfebe70694fb7707eb2c00a595c9a3 SHA-1: a82cf422bf21a78dff335610f5296ac95a2627db SHA-256: 6f0fa74ebef5e71a76d05deee885469ab777543bf9250d4ad3d38d49e8061fa3
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 known for malicious activity. The document body and embedded links suggest a lure for a 'revision guide' which redirects to a malicious URL. The presence of embedded links and the overall structure indicate an attempt to trick users into visiting malicious sites, likely for phishing or malware distribution.

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=an+inspector+calls+revision+guide+online In PDF document text
    • http://files.stalbridgelibrary.org/uploads/1/3/0/7/130740142/sumenilebi.pdfIn PDF document text
    • http://files.henhouseart.co.uk/uploads/1/3/1/4/131438323/e9a7b39d6f.pdfIn PDF document text
    • http://files.mazarchery.com/uploads/1/3/2/8/132815737/kagibipijitigawas.pdfIn PDF document text
    • http://files.melindacochraneauthor.com/uploads/1/3/0/8/130874683/8ff08058f.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/1/0448/8301/7895/files/brother_of_the_year_english.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/2175/4787/files/530262831.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/4251/2802/files/azotobacter_sp.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/21800621301.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/5939/6254/files/jimigutowufaxefar.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/30617095305.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/8333/2772/files/60893539214.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/0159/3505/files/jukefetevagopuwewesifodek.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/1214/5823/files/77145217689.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/2099/9064/files/define_the_concept_of_administration.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/8582/4164/files/sikufumanane.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/3196/9438/files/gimuzeximedofo.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 8

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_off00004f04.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x4F04 5288 bytes
SHA-256: b3e3b7d8a28b6078f84a44a2f27adf130f3f7616c57ce916e7a43b63ae1a908e
font_01_sfnt_off00006108.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6108 10080 bytes
SHA-256: b01a18abce78a1bb5b3ea957cff65399ff925501b260de7f80e7398e0e79ed2b

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