Malicious PDF — malware analysis report

Static analysis result for SHA-256 f5ceb025905e0939…

MALICIOUS

PDF

46.5 KB Created: 2020-08-14 12:19:09 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-07
MD5: 1f747ace478c086f358f98684cb7fc61 SHA-1: ef7402c658ae3cb721b1f1194adece067345d45b SHA-256: f5ceb025905e09394c7e2c7b442cf41d393810c8bafd8e4ef648edb23c4c3805
194 Risk Score

Malware Insights

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

The PDF document was flagged as malicious by an ML classifier and contains a critical heuristic firing for a malicious redirector link. It also exhibits characteristics of a PDF link farm, with numerous embedded URLs pointing to external PDF files. The primary malicious IOC is the redirector URL, which is likely used to funnel users to a malicious site. The document body, though heavily obfuscated, contains references to the redirector URL and other embedded URLs.

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=boss+video+song++sidhu+moose+wala In PDF document text
    • http://files.scoilmhuireknockraha.com/uploads/1/3/2/3/132302732/donopakowula_ritobebazi_valopadugex_molarulo.pdfIn PDF document text
    • http://files.laurelweldon.com/uploads/1/3/2/7/132712093/latebuvisi-molar-buvumo-jirawigalojuni.pdfIn PDF document text
    • http://wasibudut.zainecoon.com/uploads/1/3/0/8/130814328/97b2d20a.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/1/0437/6104/1569/files/foluzivuzegapunabuvan.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0427/4615/1078/files/732_448_7606.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/7704/2337/files/vujafedaj.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/7631/2471/files/lobisijafakejuruzim.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/9376/1941/files/simariwipagefegavigawe.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/0182/2875/files/pufopikasimewezimigej.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/7120/1695/files/soxosavufe.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/9238/5700/files/79468667407.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0440/1764/7766/files/moscow_idaho._weather.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_off0000798f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x798F 5344 bytes
SHA-256: 7b6716fc22e896c871c9c62dca7bdae3f0c7f2800feb899c1d277acd6ce07462
font_01_sfnt_off00008ba7.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8BA7 9988 bytes
SHA-256: c1c5338caafccfbdd7e46f257163d4d9b80fcd405e108ce068377bd38414d241

Open this report in the interactive analyzer, or submit your own file for analysis.