Malicious PDF — malware analysis report

Static analysis result for SHA-256 0cd2e939907a8e07…

MALICIOUS

PDF

41.3 KB Created: 2020-08-19 12:22:18 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: b63d24087ca6f396ba75c960427ff145 SHA-1: a310e00e8e37d6e84460e028707357a199621b2b SHA-256: 0cd2e939907a8e07409b82ac02b2c1520b975cccba4bb74e89824313efa461ee
154 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1059.007 JavaScript

This PDF file was flagged as malicious by an ML classifier and contains a link to a known malicious redirector infrastructure. The document body, though heavily obfuscated, contains text suggesting it is a 'lesson plan template' lure, and the embedded URLs point to a link farm designed to distribute further malicious content. The primary malicious URL identified is https://ttraff.ru/pify?keyword=nys+edtpa+lesson+plan+template.

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=nys+edtpa+lesson+plan+template
    • http://zenevo.allstateglassshowers.com/uploads/1/3/0/8/130815017/tajedadexad.pdf
    • http://files.alarmsmeathcctvmeath.com/uploads/1/3/1/4/131483098/7df67.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://cdn.shopify.com/s/files/1/0438/0049/4237/files/stock_charting_software_free.pdf
    • https://cdn.shopify.com/s/files/1/0437/3548/2517/files/root_cause_analysis_handbook_abs.pdf
    • https://cdn.shopify.com/s/files/1/0436/1610/8701/files/57343573662.pdf
    • https://cdn.shopify.com/s/files/1/0434/3382/0322/files/22957928659.pdf
    • https://cdn.shopify.com/s/files/1/0435/2986/3320/files/72449269688.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/42778697636.pdf
    • https://cdn.shopify.com/s/files/1/0434/2844/6358/files/kenesasobi.pdf
    • https://cdn.shopify.com/s/files/1/0428/9586/8067/files/95114282062.pdf
    • https://cdn.shopify.com/s/files/1/0434/2199/1079/files/modpack_jove_0._9._10.pdf
    • https://cdn.shopify.com/s/files/1/0430/6308/3162/files/xososuboperarenetut.pdf
    • https://cdn.shopify.com/s/files/1/0431/9890/6528/files/54787790832.pdf
    • https://cdn.shopify.com/s/files/1/0432/6850/5766/files/vuligimavebepuzumife.pdf
    • https://cdn.shopify.com/s/files/1/0429/5606/2876/files/dunefo.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_off00006560.bin
b2b5d01be6933fe0d9863fc71e2d4b1052b15845d67fa364062a47c121a37b70
pdf-font-stream PDF embedded font (sfnt) at offset 0x6560 5080 bytes
font_01_sfnt_off00007697.bin
e4e520557b9a25d0c32c8ea4e34f24212f0540d2eb7e9175bf8336aa2518846c
pdf-font-stream PDF embedded font (sfnt) at offset 0x7697 9840 bytes