Malicious PDF — malware analysis report

Static analysis result for SHA-256 dba335a7eae4d808…

MALICIOUS

PDF

39.1 KB Created: 2020-08-23 05:07:37 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 2c9e2390b3f0465e0b0d012ba87f4e6e SHA-1: 7167a362bfdd9486d30137ec85b41444d4698e96 SHA-256: dba335a7eae4d808ba99b4b864d6f79b8e5c009ecfca6250505a480d258b5871
194 Risk Score

Malware Insights

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

The PDF contains a malicious redirector link that points to 'ttraff.ru', disguised with a keyword related to an 'anatomy atlas'. This link is intended to lure the user to a malicious site. The PDF also contains a large number of external links, many hosted on shopify.com, which is characteristic of a link farm used for SEO poisoning or to obscure the final malicious destination. The ML classifier strongly flagged this PDF as malicious.

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.ru/pify?keyword=anatomy+atlas+2018+apk In PDF document text
    • http://jafabebi.grantcountyinfair.com/uploads/1/3/0/7/130776499/ranitij.pdfIn PDF document text
    • http://files.sheungshan.com/uploads/1/3/1/1/131164402/kogurelegiwipa-romezovag.pdfIn PDF document text
    • http://files.employeetimeclocks.net/uploads/1/3/2/6/132681066/belogisob-xekod-nodepife.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/1/0429/2549/0332/files/kixebanadu.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/5325/9679/files/tebata.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0436/3347/5737/files/44943919083.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/6338/6016/files/95442420575.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/nazowexoratusitufunu.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/4479/8613/files/tuwadutir.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0438/2644/6498/files/wojebuxigotepe.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/2050/9596/files/9101439209.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/8979/5998/files/24585622956.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0438/4007/7986/files/modulomuvakox.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/7395/2158/files/the_batman_who_laughs_issue_1.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 6

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_off00004fce.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x4FCE 5544 bytes
SHA-256: b205c020263c22534706fbc54fcea39e1ce09392303721a8e4d7cb700b507185
font_01_sfnt_off000062a9.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x62A9 16668 bytes
SHA-256: 4f9400a229f517163adfa7a9353f8d2792d8f512bd129318b9397635f8d568e7

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