Malicious PDF — malware analysis report

Static analysis result for SHA-256 0735d741c7234295…

MALICIOUS

PDF

44.4 KB Created: 2020-07-30 22:01:32 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 68f6699c0840311106a33659f53daae9 SHA-1: 32632c139e2fac20a0dd30f0e7faafc4835c9818 SHA-256: 0735d741c72342955dc0f370f2c368daefc35d6a64cab0164cea2e56d87ec858
154 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1204.002 Malicious Link

The PDF contains numerous embedded links, with one specifically pointing to a known malicious redirector. The presence of a link farm suggests an attempt to manipulate search engine results or distribute malicious content. No scripts were extracted, and the document body is heavily obfuscated, making it difficult to determine the exact user-facing lure.

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

Heuristics 4

  • 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.
  • 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=advanced+capital+budgeting+techniques+pdf
    • http://files.elquetzalspanish.com/uploads/1/3/2/3/132302764/zadamikoweles.pdf
    • http://files.wrangellmarinersmemorial.com/uploads/1/3/1/4/131453247/lopovejogo.pdf
    • http://files.allisonknoxphotography.com/uploads/1/3/0/7/130739688/wototamobidafijorami.pdf
    • http://files.simplyyogacenter.org/uploads/1/3/1/8/131856046/nilubamakipepamage.pdf
    • http://files.saeed1almarri.com/uploads/1/3/2/6/132695531/kegutegedoxojo-ginadiluru-xowof-jixemediwujag.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://cdn.shopify.com/s/files/1/0433/2794/6904/files/28920952926.pdf
    • https://cdn.shopify.com/s/files/1/0431/8245/7000/files/gozag.pdf
    • https://cdn.shopify.com/s/files/1/0437/2794/5889/files/32585608527.pdf
    • https://cdn.shopify.com/s/files/1/0430/8677/4436/files/pilafozumokosulutiv.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/bisadugizutojaririxenudep.pdf
    • https://cdn.shopify.com/s/files/1/0432/4435/5739/files/43779119655.pdf
    • https://cdn.shopify.com/s/files/1/0433/4537/9478/files/82729659826.pdf
    • https://cdn.shopify.com/s/files/1/0431/9785/7954/files/famovukikugofuxuxe.pdf
    • https://cdn.shopify.com/s/files/1/0428/0070/9791/files/4381385666.pdf
    • https://cdn.shopify.com/s/files/1/0431/5214/6587/files/xewomiselukutesulobof.pdf
    • https://cdn.shopify.com/s/files/1/0434/8523/3304/files/fawojafunefawe.pdf
    • http://www.w3.org/1999/02/22-rdf-syntax-ns#
    • http://purl.org/dc/elements/1.1/
    • http://ns.adobe.com/pdf/1.3/
    • http://ns.adobe.com/xap/1.0/
    • http://ns.adobe.com/xap/1.0/mm/
    • http://ns.adobe.com/xap/1.0/rights/
    • http://scripts.sil.org/OFL

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00006f45.bin
572f570f1d2412ef4f68320888f4196cf2bbc9ef0d9700881e811e6e8c458711		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6F45 5408 bytes
font_01_sfnt_off0000819b.bin
4096b7df2063ad70abc1b76def013ae82dc102b402699207cbfe6d5888ff2fda		 pdf-font-stream PDF embedded font (sfnt) at offset 0x819B 10180 bytes

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