Malicious PDF — malware analysis report

Static analysis result for SHA-256 3259fbc27650f502…

MALICIOUS

PDF

37.6 KB Created: 2020-07-28 23:02:27 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-07
MD5: 1cdbf139a0bbfa809168f6a3b8831f9a SHA-1: b0b3612958b48678476745bd4461113d98af793d SHA-256: 3259fbc27650f5026217bdaca98568bc09ffa10f7a7d18b20020264554312082
194 Risk Score

Malware Insights

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

The PDF contains a significant number of embedded links, with one pointing to a known malicious redirector. The ML classifier also strongly indicated maliciousness. The document body, though heavily obfuscated, contains text related to 'badmash south movie' and wkhtmltopdf, suggesting a lure. The primary attack pattern involves directing users to malicious infrastructure via a link farm.

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=badmash+south+movie In PDF document text
    • http://files.barbara-sonner.com/uploads/1/3/0/8/130814534/3609987.pdfIn PDF document text
    • http://files.mbilder.com/uploads/1/3/1/4/131406816/1092288.pdfIn PDF document text
    • http://files.nnis.net/uploads/1/3/2/6/132681823/jejiva-tefuxafanobevun-sunikumurus.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/1/0437/7870/3521/files/zetunedavabasovularowob.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0427/7954/1671/files/guvuzufamurakuwuros.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/4755/9067/files/65096634188.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/8286/6072/files/39167104712.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/tugogesobiwem.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/5573/5199/files/69456979648.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/8819/1394/files/gusefol.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0438/3529/3856/files/45286872299.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/6219/8425/files/rikalobasenabajujixa.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/4973/8650/files/69557336965.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/3237/0584/files/17073265799.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_off0000568c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x568C 4824 bytes
SHA-256: 0fe9d48b95d106bfb65efca411efc61a9bba121ec5b43610ad1c225a02e042aa
font_01_sfnt_off00006700.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6700 10136 bytes
SHA-256: 4122bd90c8850db839f98d86c0486cf624ecefe01a9714a2ee373bd77cb96286

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