Malicious PDF — malware analysis report

Static analysis result for SHA-256 3e531a1a5dbb2816…

MALICIOUS

PDF

46.8 KB Created: 2020-08-24 18:19:36 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-09
MD5: a4f9de83b9b0ebcf6a0fd308b3dfc9e3 SHA-1: 0065514f8a06ad09d288ed88d3d2ea7586bed798 SHA-256: 3e531a1a5dbb28161f647da88ad1ad45d2c93079776981de584caf5acf55074c
202 Risk Score

Malware Insights

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

The PDF contains a malicious redirector link that leads to a URL containing 'attack on titan psp game for android', likely a lure to entice users to click. The PDF also hosts a large number of links to other PDFs, suggesting a link farm for SEO poisoning or traffic redirection. The presence of a download button heuristic further supports the lure-based attack pattern.

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

Heuristics 6

  • 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.
  • Visual download / call-to-action button lure low SE_DOWNLOAD_BUTTON
    Document contains a call-to-action phrase ('Click here to download', 'Download Now', etc.) — low-signal unless other findings point to a malicious workflow
  • 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=attack+on+titan+psp+game+for+android In PDF document text
    • http://files.capitolcom.com/uploads/1/3/0/7/130775156/8211440.pdfIn PDF document text
    • http://gubepuxeg.alexandriatalley.com/uploads/1/3/0/7/130739289/weturowunez.pdfIn PDF document text
    • http://femul.suitedreams.com/uploads/1/3/0/7/130740112/a29790ee646.pdfIn PDF document text
    • http://ronoz.foxfirerevivalfarm.com/uploads/1/3/1/3/131380999/sudutikimelilipi.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/1/0432/4923/8178/files/venizolebaveni.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0436/2538/2051/files/savipitosekivanarowi.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/6872/7194/files/aeolian_harp_chopin.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/7235/6514/files/wunajagupa.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/3173/2119/files/algebraic_manipulation_worksheet.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/77330784460.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/3152/7577/files/26834824118.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/4162/8072/files/koditupetipimu.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0463/4499/4973/files/xakekobekigutozelagupo.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/5928/1048/files/pubadawiduvud.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_off00006b19.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6B19 5284 bytes
SHA-256: 8f63d5a47c8cf8a18171c835b903abc66bf5b1ced1f5cf0f05651119b62fce19
font_01_sfnt_off00007cf1.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7CF1 10296 bytes
SHA-256: 76979b0c651bdfe8df4a83779fcb954ffdeedfdb70319dad55bd55c5f4191b77
font_02_sfnt_off00009fff.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x9FFF 4324 bytes
SHA-256: ff5f0ef16caf3e97cd1984b3a03ea88e11eab8cf63d2ee006085a4b9995833f3

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