Malicious PDF — malware analysis report

Static analysis result for SHA-256 8e64f43d0a0e0a91…

MALICIOUS

PDF

45.0 KB Created: 2020-08-25 00:22:33 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 440ffb9766720594d33fdc7d12f9ca65 SHA-1: dcf8f1a1bd0d49df7f5e8e693f83d0d3f6ef2cee SHA-256: 8e64f43d0a0e0a91b59f50ccb80a5c9f14fb58a9e465f6df0ab50598ac52f044
194 Risk Score

Malware Insights

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

The PDF contains a heuristic firing for PDF_MALICIOUS_REDIRECTOR_LINK, indicating it points to malicious infrastructure. The document body, though heavily obfuscated, contains the URL https://ttraff.cc/pify?keyword=adobe+acrobat+pdf+reader+9.+0+free, which is presented as a lure for free software. The PDF_SEO_LINK_FARM heuristic indicates a large number of external links, many hosted on cdn.shopify.com, suggesting a link farm used for SEO poisoning or to host various payloads. The primary malicious IOC is the redirector URL.

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=adobe+acrobat+pdf+reader+9.+0+free In PDF document text
    • http://ramot.janetahrens.org/uploads/1/3/2/6/132682790/penozezawexilafe.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/1/0432/7201/1931/files/identities_worksheet_answers.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/4217/7181/files/beginner_guitar_chord_progressions.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/5865/1545/files/farit.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/3876/9303/files/abbyy_transformer_3._0_pro_cena.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/9419/6902/files/11929129370.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0427/9812/1119/files/28239075592.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/2756/1634/files/josipuzarenemetagagon.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/3885/0724/files/sewiboxevilojivejel.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/9524/4441/files/android_studio_linux_command_line.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 2

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_off0000647b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x647B 5032 bytes
SHA-256: 4a1d24eb59d551df8ef1545652efa0ed229ff093c5d55b8d15779d9236ec6a37
font_01_sfnt_off000075a6.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x75A6 10260 bytes
SHA-256: 716f785327fb00c02752fb58af8c962af7e940dd366bbc1067b0aa5a6f22422b
font_02_sfnt_off000098ca.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x98CA 4324 bytes
SHA-256: cd94ef65598b1866d0653cdd88243d989fd81359c0e770c2d3a4858f1c2f6d34

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