Malicious PDF — malware analysis report

Static analysis result for SHA-256 a95a38f4b4a69742…

MALICIOUS

PDF

37.7 KB Created: 2020-08-19 06:57:21 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-09
MD5: b222ce283ad0af246ade632663221707 SHA-1: f14bfff4fd8656f2a75a0af80901c2156e975e8b SHA-256: a95a38f4b4a69742740678407ad2877b1f74d5f5e822e836a3d3fd2f84ac0ae6
194 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1204.002 Malicious Link T1059.001 PowerShell

The PDF file contains numerous embedded links, a common tactic for SEO manipulation and distributing malicious content. One of the primary links directs to a known malicious redirector, ttraff.cc, which is disguised as a wallpaper download. This suggests the document's purpose is to redirect users to malicious infrastructure. The PDF structure and the presence of a link farm indicate a social engineering attack aimed at driving traffic 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.cc/pify?keyword=sky+blue+color+wallpaper+hd In PDF document text
    • http://files.imancircusarts.com/uploads/1/3/0/9/130970003/tikuzuzupuwotad.pdfIn PDF document text
    • http://torozago.greatscottideas.com/uploads/1/3/0/7/130739704/6010c6f3d3ae5.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/1/0437/5746/9845/files/66638398223.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/2287/5800/files/1451350852.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/3884/2779/files/zoneratikuguwuwijuxenid.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/5838/8374/files/28118790379.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/7194/6398/files/28624673256.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0440/4133/9045/files/antimicrobial_resistance_articles.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0438/1927/0301/files/switchresx_el_capitan.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/8158/1209/files/kapajul.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/2732/5343/files/24235960898.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/1553/6793/files/begrime_font_free.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/3966/1986/files/nivafewavod.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_off000054d2.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x54D2 5484 bytes
SHA-256: 02f47e7f9aa9c825952ced3027340ec0f8e5990f41e49add19ae09240624ab8d
font_01_sfnt_off0000677e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x677E 10288 bytes
SHA-256: e8b6371ecb87e463e4fdfc85941c8321531e77e8258ff26a002666b38f013e48

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