Malicious PDF — malware analysis report

Static analysis result for SHA-256 57ad885fccd35712…

MALICIOUS

PDF

57.7 KB Created: 2020-08-24 01:02:51 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-09
MD5: e71d424c1c9d5868be12fd6060868fc5 SHA-1: 9160356f33a121d18cc6095f4cf190252011596d SHA-256: 57ad885fccd35712cf5791a6fa137d58c52e62d9fd6abdf09815b6ac60f695a5
194 Risk Score

Malware Insights

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

The PDF contains a heuristic firing for a malicious redirector link pointing to 'ttraff.ru'. The document body, though partially corrupted, contains the same URL and references to 'ebcdic to ascii conversion', likely a lure. The PDF also contains a mass external PDF link farm, with many links hosted on shopify.com, but the primary malicious indicator is the ttraff.ru redirector.

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=ebcdic+to+ascii+conversion+in+informatica In PDF document text
    • http://files.daugustbaertlein.com/uploads/1/3/1/8/131871705/donebipuvufi.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/1/0431/0623/8613/files/sukiwurunawalafinev.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/9890/6528/files/brocade_fabric_os_upgrade_guide_8._2.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/7901/5327/files/bootstrap_icons_fa.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/9578/4600/files/fda_guidelines_immunogenicity.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/7061/1861/files/64460628443.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/9190/9025/files/51393641232.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/2865/9869/files/39837693850.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/0510/0711/files/96714748765.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0462/2758/7223/files/zolunilomopimas.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
    • http://dejavu.sourceforge.netIn PDF document text
    • http://dejavu.sourceforge.net/wiki/index.php/LicenseIn PDF document text

Related samples 1

Ranked by shared artifacts, heuristics, extracted URLs, CVEs, and signatures.

Full JSON: related samples API

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00007f5d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7F5D 5292 bytes
SHA-256: 47db9d5866405fbf46d5b7bc7e9407b17a15d27f6c63fce989cb63eff1dbf4a7
font_01_sfnt_off0000914b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x914B 16524 bytes
SHA-256: 51f8a31c916f3c34381f635c8c0de19b23f0b57f0f4fe60b4d1da504c3ffe292
font_02_sfnt_off0000c48d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xC48D 16204 bytes
SHA-256: e93acd332f5893643511f4cefd38969ad5c744ad1b08842a788b6be7d277dd15

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