Malicious PDF — malware analysis report

Static analysis result for SHA-256 ab75aac581a74a03…

MALICIOUS

PDF

41.4 KB Created: 2020-08-19 06:45:56 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-09
MD5: b9a37b7233174a133e6a7645e855691b SHA-1: e4405415c5a3c2379986c0da497d2b1c7e0b823a SHA-256: ab75aac581a74a035f38cb5c387a8b02bdb1a8ecc5db748bc8ed06cb1ac31761
194 Risk Score

Malware Insights

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

The PDF contains a high density of external links, many pointing to Shopify domains, but one critical link redirects to a known malicious infrastructure at 'ttraff.cc'. The document body, though heavily obfuscated, contains the same URL, suggesting a lure to a malicious site disguised as a helpful resource. The ML classifier strongly supports the malicious nature of this PDF.

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=remove+duplicates+in+excel+2003+spreadsheet In PDF document text
    • http://files.asadeltanu.org/uploads/1/3/1/3/131384429/1435233.pdfIn PDF document text
    • http://sevuv.courtenaydore.com/uploads/1/3/0/8/130874493/pezidudoxuk.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/1/0438/2654/4802/files/1430171329.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/5244/9444/files/47164210788.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/6193/5261/files/la_jolla_tide_chart.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/9145/2314/files/22191435253.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/3088/8094/files/15907110019.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0427/8976/5276/files/72394116532.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/1618/3205/files/vudekiboxifuximunixagodax.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/9732/5732/files/atrocity_act_in_gujarati.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/2553/0005/files/19977033109.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/0319/0181/files/eset_antivirus_mac.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0436/4071/7462/files/37410354552.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/7338/8190/files/bakixili.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 5

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_off0000621f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x621F 5888 bytes
SHA-256: 9c0d13533daba435e79d24349a0d641c8018ff1a5de20a00e5709c57d5483a40
font_01_sfnt_off00007602.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7602 9960 bytes
SHA-256: 55e4b43ea7d05590a1122ac68bdf1d8e3f4c57adda92b43b4fb206e6fac4df3c

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