Malicious PDF — malware analysis report

Static analysis result for SHA-256 4b6c7a4720977c4f…

MALICIOUS

PDF

48.5 KB Created: 2020-08-25 10:53:26 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-09
MD5: 9bd601c8303fb7f2259dfc473db05373 SHA-1: 48c092fbac1507f45f2a7cda03aba0e8d6d3d26c SHA-256: 4b6c7a4720977c4fcfbb3936c30c5fab087764a9b0af9f620414d8bc803f1e22
194 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1204.002 Malicious Link

The PDF contains multiple embedded links, with a critical heuristic firing indicating a link to known malicious redirector infrastructure. The document body, though partially corrupted, contains the same URL found in the heuristic, suggesting a lure to a malicious site. The presence of a large number of external PDF links also points to a link farm or redirection scheme.

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.ru/pify?keyword=acknowledgement+for+ojt+narrative+report+pdf In PDF document text
    • http://files.tashstouchgothicclothing.com/uploads/1/3/1/3/131379356/d39df.pdfIn PDF document text
    • http://jazelek.seanjmnewman.com/uploads/1/3/0/9/130969933/e3af32.pdfIn PDF document text
    • http://files.sivitgear.com/uploads/1/3/0/9/130970003/6856326.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/1/0431/4818/1666/files/90851417074.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/0499/2408/files/mepuxidizujoxokawuputem.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/zutazalurofesavasa.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/6015/8873/files/smoke_effect_background.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/9964/4314/files/lightroom_5_tutorials.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/1471/7599/files/65124306306.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/1475/8293/files/61364366366.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0427/9926/8003/files/sosamexepebesikuw.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/3624/5144/files/gezogo.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/5769/2320/files/lehninger_principles_of_biochemistry_solution_manual.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
    • http://dejavu.sourceforge.netIn PDF document text
    • http://dejavu.sourceforge.net/wiki/index.php/LicenseIn PDF document text
🗂 Part of campaign: mdeasonphotography.com 5 samples

Related samples 8

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_off000069ed.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x69ED 5576 bytes
SHA-256: ba91e40c7ca03ee828324f0a812e2dd673045ec17fe943344c8580d0d27f658f
font_01_sfnt_off00007ceb.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7CEB 10140 bytes
SHA-256: 3afd9134cd64a3c0a4cfd9cc413b8240987fe5ccf8bb86651af6f441056ccff1
font_02_sfnt_off00009fd5.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x9FD5 16144 bytes
SHA-256: f0a8b786da721c7415a59d91fbce3b20bbb98ea32e48857ac1ff22d53b00ec29

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