Malicious PDF — malware analysis report

Static analysis result for SHA-256 d4f83edb64e24c92…

MALICIOUS

PDF

41.7 KB Created: 2020-08-19 19:09:24 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-09
MD5: f277718afaa6229c6ac66d953e6ea6c3 SHA-1: 1ff005820db88db137495f4342aa899afa28b32a SHA-256: d4f83edb64e24c9211f82f0324efb992867867f337c57447e0c77e1fbf05c648
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, identified as a PDF link farm. One of these links, 'https://ttraff.cc/pify?keyword=mercado+de+valores+definicion+pdf', is flagged as a known malicious redirector. The presence of a link farm and a malicious redirector strongly suggests an attempt to lure users to malicious websites, likely for phishing or malware delivery. No scripts were extracted, but the PDF structure and link analysis are sufficient for this assessment.

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.cc/pify?keyword=mercado+de+valores+definicion+pdf In PDF document text
    • http://files.my-trans-life.com/uploads/1/3/1/0/131070792/c2d8b83.pdfIn PDF document text
    • http://files.studentsoflife.net/uploads/1/3/1/4/131406478/9de7a80c91287.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://www.daltonmaag.com/In PDF document text
    • https://cdn.shopify.com/s/files/1/0434/8336/5528/files/26893947800.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/7596/0985/files/pivapudadiviru.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/5395/6758/files/71257499691.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/4444/5092/files/81482042810.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/1042/4985/files/6077296048.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/7439/6058/files/65087717060.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/1382/3909/files/30539342396.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0427/7954/1671/files/54731761861.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/6818/6015/files/mifuxazeribodig.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/6860/5095/files/dinotozokuwanaragomuda.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/7719/8229/files/25345084376.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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off000056ae.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x56AE 4924 bytes
SHA-256: 930a083956c37a766a7b2f8e0d8e49eb398bb8aad63d534314aadf23bf3f2cb4
font_01_sfnt_off0000677c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x677C 10728 bytes
SHA-256: 58a945b5a16b3624f6787a84f7336dedf05dcae9b7625ad56553082ff225ddba
font_02_sfnt_off00008a65.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8A65 4324 bytes
SHA-256: d1f4a20f0e35a0564be54678b929bb8c711862c507f070c2b9a6abea8daf4378

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