Malicious PDF — malware analysis report

Static analysis result for SHA-256 a642042d0769f914…

MALICIOUS

PDF

47.1 KB Created: 2020-08-17 05:32:03 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-09
MD5: fa0cebc071022d05989ce0211ed996ed SHA-1: 5049e8344c3d709779bbea241e1085ad2cb4a784 SHA-256: a642042d0769f914b50e150fad64105c31c7a0c51fbc052f56999171ccfb77c0
194 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1059.001 PowerShell

The PDF file exhibits characteristics of a link farm, embedding numerous external links. One critical heuristic identified a link to known malicious redirector infrastructure at 'https://ttraff.com/pify?keyword=landscape+design+app+free+android'. The ML classifier also strongly indicated maliciousness. The embedded links likely serve as a lure to direct users to potentially harmful sites.

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.com/pify?keyword=landscape+design+app+free+android In PDF document text
    • http://files.jacksherrydpm.com/uploads/1/3/1/6/131637649/307463.pdfIn PDF document text
    • http://files.statedshowroom.com/uploads/1/3/1/0/131070212/3bf8e28a0cb60a.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/1/0432/5048/3368/files/85812845001.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/8148/2919/files/49658906139.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/21617342462.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0427/5588/3175/files/6296496313.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/8810/2051/files/fedixefitoxuwajidorafek.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/6066/6274/files/20021258951.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/7142/9015/files/microbiology_laboratory_textbook.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/2537/5130/files/pig_enter_the_gungeon.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0436/0755/6258/files/law_office_invoice_template.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 6

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_off00006d64.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6D64 4940 bytes
SHA-256: 779498b113a0d83d1c4d8c5614d990f2a8dadd6e281d1961c50840abc9948d48
font_01_sfnt_off00007e36.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7E36 10360 bytes
SHA-256: 97b9717601faf5fd8a42fa3bff1adda6716c151700597e7bc2e39c7220e0f09c
font_02_sfnt_off0000a1a2.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xA1A2 4324 bytes
SHA-256: 7f6049e5011acf0e8581793f2bc2bb947aac2929fdb77abc318b2a6155c1ef71

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