Malicious PDF — malware analysis report

Static analysis result for SHA-256 4a3d65d24fac63b2…

MALICIOUS

PDF

37.6 KB Created: 2020-07-28 15:04:17 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-09
MD5: b05b6bd0816b0542d2a98254b566c272 SHA-1: 82cff104b52b67730ddfbc516c19293fb1fab067 SHA-256: 4a3d65d24fac63b2569df26d4eb0e5e593a3b4bd22abc08ef9142f51ba429c54
194 Risk Score

Malware Insights

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

The PDF file contains a large number of embedded links, many of which point to external PDFs hosted on Shopify. One prominent link redirects to 'ttraff.ru', a known malicious redirector. The document body, though heavily obfuscated, appears to be a lure related to a 'car racing game 3d uptodown'. The combination of a link farm and a malicious redirector strongly suggests a phishing or malware distribution attempt.

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/pify?keyword=car+racing+game+3d++uptodown In PDF document text
    • http://files.tobarmhuirecrossgar.com/uploads/1/3/1/6/131606668/4869085.pdfIn PDF document text
    • http://files.lottglobal.com/uploads/1/3/1/3/131380043/vakotab-koteluta.pdfIn PDF document text
    • http://files.sutherlandbeatson.com/uploads/1/3/1/3/131384024/ef3a198fc3591df.pdfIn PDF document text
    • http://files.localzak.com/uploads/1/3/1/4/131437454/medepigilipi.pdfIn PDF document text
    • http://files.dietrichleisimages.com/uploads/1/3/1/4/131406841/60acfe27.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/1/0433/0687/7080/files/tujekozovazufurujujazer.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/2621/8134/files/pulunidabur.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/1267/5990/files/xagakudukapu.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/6925/0463/files/65913943206.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/4742/0066/files/gemeliworawelizub.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/7678/0192/files/sobazonumafarewaxagul.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/4295/5676/files/56557294857.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/1409/3986/files/demexakuga.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/5907/6510/files/78936637099.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/9420/4825/files/kilopaketivesoxut.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/8495/5300/files/gapususotogezama.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0438/5941/1094/files/wisorefadawukawixadimij.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/8495/5300/files/81350548207.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 8

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_off00005800.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5800 5344 bytes
SHA-256: 00fddf20d82536cb152340529c23e35ef04b5930e5cb665fe0f7bc8c748f4ec6
font_01_sfnt_off00006a22.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6A22 9168 bytes
SHA-256: 3091256382f13bf9f3487dd1c8a3883ff4b1192a1a63a33a1efda0ff6be154c0

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