Malicious PDF — malware analysis report

Static analysis result for SHA-256 1ab665fea0b9999d…

MALICIOUS

PDF

36.5 KB Created: 2020-08-23 09:41:49 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-09
MD5: c130b700cf363bce372fd168f1a3d07f SHA-1: 23aa924cdfc99529d254c3b09de1c0b5b22450c8 SHA-256: 1ab665fea0b9999da12ded81743517684f9bbaaad4277dadd90193efb4947223
162 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1204.002 Malicious Link

The PDF file was flagged as malicious by a machine learning classifier and contains a high number of embedded links. One of these links, 'https://ttraff.com/pify?keyword=bus+game++uptodown', points to known malicious redirector infrastructure. The document appears to be part of an SEO link farm, with many links pointing to Shopify-hosted PDFs, likely to manipulate search engine rankings or distribute further 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.com/pify?keyword=bus+game++uptodown In PDF document text
    • http://files.sarahavalia.com/uploads/1/3/0/7/130776183/xesebexeladonej_gowidebugogumes_benazal.pdfIn PDF document text
    • http://saxes.uruguayanchamberusa.com/uploads/1/3/1/4/131454106/vuxojagesefuxem.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/1/0428/8803/6515/files/ar_abbreviation_state.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/6104/1559/files/nabisale.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/4443/7144/files/vejetatabaluwedogariwef.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/1518/4277/files/94318769136.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/4298/7422/files/dijunuxikerofo.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/4729/5898/files/vopelivakogole.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/3708/2271/files/reridigasajosiwedebe.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0438/1641/9488/files/stepper_motor_drive.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/9587/5989/files/13232356185.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 2

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_off0000525d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x525D 5292 bytes
SHA-256: ae1a91f822d182af45707ca9a83472976f54ce8e6b33eb7202e76024d4503ed5
font_01_sfnt_off00006463.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6463 9764 bytes
SHA-256: a09d1d74fd4476c856b8c8936fec620a58de3137b5041a4f1881bdc0b60594da

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