Malicious PDF — malware analysis report

Static analysis result for SHA-256 4b6b11c53d634028…

MALICIOUS

PDF

45.2 KB Created: 2020-07-27 09:18:25 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 3f470ed05981b45178564200450ecd98 SHA-1: a38fd16dbaf74d991089f10f092fd36b0d1dd39c SHA-256: 4b6b11c53d63402809a02068dcf7debc5658edc4af0114cc8c3edc593aa040aa
194 Risk Score

Malware Insights

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

The PDF contains a large number of embedded links, with the primary heuristic identifying a link to a known malicious redirector at 'ttraff.ru'. This suggests the document is designed to direct users to malicious infrastructure. The presence of a link farm further supports the idea of a broad phishing or malware distribution campaign.

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=ar+drone+2.+0+elite+edition+manual In PDF document text
    • http://files.haventruck.com/uploads/1/3/0/7/130776343/rolurezum.pdfIn PDF document text
    • http://files.cocon-interior.nl/uploads/1/3/2/6/132681916/f5d5a30.pdfIn PDF document text
    • http://files.ciaranjohn.com/uploads/1/3/2/6/132681482/nefugutezakure.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/1/0429/8542/2997/files/jaduka.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/1824/8601/files/80607127373.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/rirolor.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/2106/5640/files/33774128012.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/2833/3219/files/84213162211.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/nubizasijimowedemo.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/7258/5881/files/webugarituvotebedozi.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/6108/3301/files/79538827424.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/13879903487.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/1238/2117/files/97114638897.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/pegumi.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/0164/2149/files/karefijimobusowubo.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/0342/8515/files/fasusitixupitikufiviri.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0427/6856/4380/files/vorobowuvonajixaxorovix.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/6285/3794/files/17846996059.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 1

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_off00007506.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7506 4968 bytes
SHA-256: 9d21efc561adb42202472e2ec260f4cfe1844ceb915d20d5f538aa83ff6aa95f
font_01_sfnt_off000085c8.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x85C8 9880 bytes
SHA-256: 70d2d83b3122a31e0796784d4618482a336147b31e448259ba7698d09f6a2b73

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