Malicious PDF — malware analysis report

Static analysis result for SHA-256 49874a461d21f0e3…

MALICIOUS

PDF

40.8 KB Created: 2020-08-12 03:08:08 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-09
MD5: c0ccc72942321e53838703856e487429 SHA-1: 59f75094dcb69fb14e146be8184e4313a6162a57 SHA-256: 49874a461d21f0e3a418e32a11f0cab7b75fb8c3e84f7a84babd720a50c17b44
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 at least one identified as a malicious redirector. The primary malicious URL, https://ttraff.ru/wb?keyword=tableros%20de%20control%20libro%20pdf, is likely used to funnel victims to further malicious content. The presence of a large number of external PDF links, many hosted on Shopify, suggests a link farm or SEO poisoning tactic to increase visibility and click-through rates to malicious destinations.

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/wb?keyword=tableros%20de%20control%20libro%20pdf In PDF document text
    • http://files.magothycooperative.com/uploads/1/3/0/7/130776757/defe9e489d.pdfIn PDF document text
    • http://files.artbyguyyoung.com/uploads/1/3/0/7/130775195/9569679.pdfIn PDF document text
    • http://files.jolietwestlibrary.com/uploads/1/3/2/3/132302894/b4f3c6401.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/1/0434/6026/4096/files/anglo_saxon_period_in_english_literature.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/9056/6556/files/sawigizikezetovur.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/6130/4728/files/fuwodevavusepababovo.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/2739/8807/files/jezewerebotejifenal.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/3729/4745/files/23544142426.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/3669/6999/files/pajamifefuzewuzazedoredid.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/5511/9512/files/voronise.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0438/8644/4696/files/cardiology_textbook_free_download.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/6459/7397/files/gudevibepeti.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/2177/0656/files/96162402059.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/9070/5574/files/89803154579.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 2

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_off000061c8.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x61C8 5236 bytes
SHA-256: 72101c6051a3d8fe1a05380e716bee9ab08df71e334eec8ad01b4736322c94d1
font_01_sfnt_off0000739e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x739E 10740 bytes
SHA-256: 70d5bba586734d738421ee039918973e28ed5df32b86348328090b7b303415eb

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