Malicious PDF — malware analysis report

Static analysis result for SHA-256 895022ec0373a8cd…

MALICIOUS

PDF

45.8 KB Created: 2020-08-06 10:15:42 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 5988f28c8e611d461711d05183a391c0 SHA-1: ab931747cb008dffffdfa3d5a96b3ee604302d4a SHA-256: 895022ec0373a8cd77eb39828a0be8625d51803a679f046569a918a96af28e5d
194 Risk Score

Malware Insights

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

The PDF contains numerous links, including one disguised as a 'Chamberlain b970 manual pdf' that redirects to a malicious SEO redirector. This redirector likely serves as a lure to phish for user credentials or deliver a secondary payload. The ML classifier strongly indicated maliciousness, and the presence of a redirector link points to a phishing or malware distribution 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.ru/pify?keyword=chamberlain+b970+manual+pdf In PDF document text
    • http://files.mybackyardbuilder.com/uploads/1/3/0/7/130738835/tiginaselatike.pdfIn PDF document text
    • http://files.sachdevwc.com/uploads/1/3/1/8/131857152/radawugupesine.pdfIn PDF document text
    • http://files.thetrendingteens.com/uploads/1/3/1/3/131380845/beduvoruv.pdfIn PDF document text
    • http://files.innerkeyhypnotherapy.com/uploads/1/3/1/3/131380558/5132480.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/1/0433/0687/7080/files/zemivok.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/0154/4863/files/57394062903.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0441/3505/5512/files/zudevivogefuxad.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/2946/2177/files/80179727104.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0436/3508/1374/files/gavumozitujolobo.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0427/6705/7063/files/tomobizitebedibo.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/4088/2340/files/32731304805.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/6702/3259/files/bazotox.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/8794/6133/files/56837538627.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/8772/4704/files/fonanegiwomer.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/8549/6482/files/ludobukadufeped.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_off000073c1.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x73C1 5524 bytes
SHA-256: f3fee291787afb8bb22e65a4ed3f7dc2f612042877b87529fee217b921b4cb21
font_01_sfnt_off00008653.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8653 10768 bytes
SHA-256: ae74df0b7fb5062d8ae325bbb0a9032aeeb332cd1aa6a1afc4f9f6c72802d4e9

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