Malicious PDF — malware analysis report

Static analysis result for SHA-256 10ea8f2b5c121dde…

MALICIOUS

PDF

42.5 KB Created: 2020-08-19 12:17:27 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 7342194d7749eeaa1915c921bf10e374 SHA-1: 99f63431aa77d569bf546481308affd301411340 SHA-256: 10ea8f2b5c121ddea9d9c366708007e9ddadc12e18d019a08d22b247cc6c51d6
162 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

This PDF file was flagged as malicious by an ML classifier and contains multiple heuristics indicating malicious redirector links. The document body, though heavily obfuscated, contains a URL that appears to be a lure for free instrumental music, which redirects to a known malicious infrastructure. The presence of numerous external PDF links, many pointing to Shopify, suggests a link farm or SEO manipulation tactic to distribute malicious content.

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.
  • SEO-redirector lure link (multi-word utm_term) low PDF_SEO_UTM_REDIRECTOR_LINK
    PDF contains a clickable link to a multi-word utm_term / FeedBurner-proxied SEO redirector — the search-keyword gateway used by the 'free document download' phishing family. Surfaced as an IOC; on its own this is a low-confidence signal.
  • 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=background+music++free+instrumental In PDF document text
    • http://files.beeffoundation.org/uploads/1/3/1/3/131398526/kukimogole_kajazotikoj.pdfIn PDF document text
    • http://files.fenwaywestfield.com/uploads/1/3/2/6/132681033/c264ee13e.pdfIn PDF document text
    • http://relaxow.myowild.com/uploads/1/3/0/8/130814328/ferixetidawo.pdfIn PDF document text
    • http://files.timewithschweitzer.com/uploads/1/3/1/3/131384113/titikolazi.pdfIn PDF document text
    • http://kefewojik.kennypughmusic.com/uploads/1/3/0/7/130776760/butimilekuzoxe-mosamozaf-jinuxurati-zobonev.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/1/0435/6653/0719/files/682557440.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/7772/9442/files/nugazojitefifote.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/1684/6488/files/saworogano.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0449/0382/5575/files/temisiwabiwupuwudewij.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/7373/9675/files/fapevemobag.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/8716/7645/files/nisoronuv.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/1393/9110/files/51497993572.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/5543/8241/files/vopilikoro.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/8724/0093/files/bluestack_untuk_laptop_windows_10.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/9728/2977/files/87651785645.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/7026/7300/files/86860668918.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/8609/4241/files/70930013913.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 8

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_off0000678e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x678E 5456 bytes
SHA-256: 81eede7ed8c499812628a55560bb27889cd88361217aaa9b3628a1f5bdf2a063
font_01_sfnt_off00007a08.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7A08 10284 bytes
SHA-256: d0da49587253a0287cf5966c7470d7b59edbad8f5b0613b8f1412ed77a1188bf

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