Malicious PDF — malware analysis report

Static analysis result for SHA-256 aaccebda0283ab5a…

MALICIOUS

PDF

40.6 KB Created: 2020-08-11 18:45:33 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-09
MD5: e76327f7f630e09362aaf925ec1df09a SHA-1: 21b20bf74dc30de5f47587cc60bb049012add4d7 SHA-256: aaccebda0283ab5ab7d182216be4770978651ca18b860389a7eef3e971d3a310
214 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 a redirector service known to host malicious content. The document body, though partially obfuscated, includes references to PDF generation and academic topics, likely serving as a lure. The presence of a QR code lure heuristic further suggests a phishing or redirection attempt. No scripts were extracted from this sample.

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.
  • QR-code redirect lure medium SE_QR_LURE
    Document instructs the user to scan a QR code with a phone — consistent with QR phishing, but also common in legitimate documents
  • 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=generate+pdf417+barcode+in+java In PDF document text
    • http://jemavi.fanatixwrestlingfederation.com/uploads/1/3/1/1/131163635/nutemebut-lelegaruni.pdfIn PDF document text
    • http://litozulol.theamericanmatrix.com/uploads/1/3/1/6/131606490/sarinika.pdfIn PDF document text
    • http://mevawowij.thefoxsfiberden.com/uploads/1/3/1/1/131164250/adb2c74.pdfIn PDF document text
    • http://files.christchurchmorningside.org/uploads/1/3/1/8/131857540/37b3633.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/1/0438/9981/4040/files/solving_limits_algebraically.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/9898/7941/files/lowes_americus_ga.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/0670/5312/files/34521733524.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/8278/4676/files/jinevifusas.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/0951/5425/files/98863496949.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/2733/2252/files/bloomfield_contribution_to_linguistics.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/3467/3305/files/agamemnon_full_book.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/0475/5096/files/air_force_x_group_question_paper.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/5621/8780/files/92661274011.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/8210/4478/files/algorithm_pseudocode_examples.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/4642/7031/files/l_aleph_borges_italiano.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/9892/2392/files/wigapopaselukaroximew.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 4

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_off00005fa3.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5FA3 5468 bytes
SHA-256: c278ea595ee2ff97793d9bb2e30e6611c2e8edc2094840d621be1a1959d7766e
font_01_sfnt_off00007263.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7263 10364 bytes
SHA-256: c50f7fbc3bd9e140dd4253a58e8110b4db60e3b952cb592c50e5f9da92f1c4c1

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