Malicious PDF — malware analysis report

Static analysis result for SHA-256 daa1242648da1228…

MALICIOUS

PDF

47.8 KB Created: 2020-08-17 10:27:14 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-09
MD5: b978bea67776b8b79ccd65427406c51c SHA-1: cf90cf46ffdbd6db124116b1f557b4bd0441611b SHA-256: daa1242648da122855ccd1ca83898c025b88bfe0e6c3b900d0560247449e0710
194 Risk Score

Malware Insights

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

The PDF contains a large number of embedded links, many of which point to a redirector service (ttraff.com) known for malicious activity. The document body, though heavily obfuscated, contains references to URLs that are part of this link farm. The primary attack pattern involves redirecting users to potentially harmful content through this extensive link farm.

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.com/pify?keyword=python+formatting+vscode In PDF document text
    • http://pofezafuz.ordinarymiraclescaninerescue.org/uploads/1/3/2/6/132681218/sizewedokolojive.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/1/0428/5680/8615/files/air_vessel_design.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/8466/1407/files/bapufevulifen.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/0319/0181/files/kugozurosur.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/4885/2891/files/33174204686.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0440/3606/3397/files/69455721822.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/0670/5311/files/93614116750.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/6641/7567/files/types_of_enzyme_inhibition_with_examples.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/7410/1160/files/dozumavagibuwedagi.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/1080/8217/files/tahan_kadambari_download.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0439/0957/8904/files/building_drawing.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
    • http://dejavu.sourceforge.netIn PDF document text
    • http://dejavu.sourceforge.net/wiki/index.php/LicenseIn 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_off0000640e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x640E 5564 bytes
SHA-256: 156c55b0d3a2a890e30210095193dae3aa1c9ab5e8014d4f5ed8575f7f1e6329
font_01_sfnt_off000076ca.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x76CA 11440 bytes
SHA-256: a77603212c898e2199b088f6b89fe02d6f550dc9d406933824e0435925a4d606
font_02_sfnt_off00009bff.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x9BFF 16524 bytes
SHA-256: e12927bcd43f280d077d848c6a2458140bd1208675b6924976ed8e54012a164d

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