Malicious PDF — malware analysis report

Static analysis result for SHA-256 0a74af4c3252d7b0…

MALICIOUS

PDF

43.5 KB Created: 2020-08-22 08:46:36 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-09
MD5: a330ca1711cada1354f6fe93081abf5a SHA-1: 04ba839bea49bbb52beb45b3f5fe5162dc25a83c SHA-256: 0a74af4c3252d7b0f01c23ea1ab05866f59b81d4a26592009b3aef310ed5ec95
234 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1059.007 JavaScript T1203 Exploitation for Client Execution

The PDF contains a link farm and a redirector designed to lure users to a malicious site, masquerading as a download for 'T i army 2 l u cho android'. The embedded URLs and the heuristic firings strongly indicate a phishing or scam attempt, likely involving a payment redirection lure. No scripts were extracted, but the PDF structure itself facilitates the redirection.

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.
  • Payment redirection / bank-detail change lure high SE_PAYMENT_REDIRECT_LURE
    Document describes new or changed bank, wire, ACH, IBAN, SWIFT, or routing instructions — a high-value business-email-compromise pattern
  • 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=t%25E1%25BA%25A3i+army+2+l%25E1%25BA%25ADu+cho+android In PDF document text
    • http://nuzodape.jjohnsonartist.com/uploads/1/3/1/6/131606295/cd7dd.pdfIn PDF document text
    • http://files.steamsupply.com/uploads/1/3/1/6/131636946/mimujanebije_veboj_dorore_dakisulorap.pdfIn PDF document text
    • http://files.heartlandchurchnetwork.org/uploads/1/3/2/8/132814387/a72f5b06681.pdfIn PDF document text
    • http://files.anniescandy.com/uploads/1/3/1/4/131437427/gejulomuwapibufavik.pdfIn PDF document text
    • http://files.bernardramsdale.com/uploads/1/3/1/0/131070523/guzazixuw.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/1/0428/9835/8432/files/51994241049.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/9195/1769/files/mvn_skip_tests.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/1549/6092/files/70918193409.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/1663/4016/files/bimevodavajip.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/1060/5735/files/69118584269.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/5740/4309/files/aguner_poroshmoni_song.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/2068/1377/files/34110288751.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0436/9835/6392/files/6686117418.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/2254/0185/files/88597553933.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/0056/9751/files/simple_personal_budget_template.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0439/2668/3816/files/cardiac_catheterization_technique.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/7485/3793/files/muzica_romaneasca_2013_noua_mp3.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

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off000067f3.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x67F3 5708 bytes
SHA-256: 51b9c926c2bcd449a32193ec8cc6bf56f9a41f1c040a03bc89790aa5ee5f98d1
font_01_sfnt_off00007a13.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7A13 11240 bytes
SHA-256: 8ce86aff4c07790d14a25593844c71428bcbb5495ec7bfa3081b92107d614df2