Malicious PDF — malware analysis report

Static analysis result for SHA-256 3d14de34ff1c6ef2…

MALICIOUS

PDF

42.3 KB Created: 2020-08-22 20:20:24 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: e3bce895b27f49a36c6087804a721bc7 SHA-1: d9000e573e7d92293c39feac952008b9cf64d19b SHA-256: 3d14de34ff1c6ef22ee852a4e9634d649ad765c8b4317477138fd273adf502e3
154 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1059.001 PowerShell

The PDF contains a critical heuristic firing indicating it's a malicious redirector link, pointing to 'https://ttraff.cc/pify?keyword=admin+manager+job+description+pdf'. The document body, though heavily obfuscated, contains similar text and URLs, suggesting a lure to a malicious site. The presence of numerous external PDF links, many hosted on Shopify, further supports the link farm and redirection attack pattern. No scripts were extracted from this sample.

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.cc/pify?keyword=admin+manager+job+description+pdf
    • http://files.titansinvite.com/uploads/1/3/1/6/131607522/lomina_vutunifurep_rudorifopagu.pdf
    • http://files.foodforthesoul.net/uploads/1/3/2/6/132696214/fewanujuwesetesava.pdf
    • http://figinud.tonycliffmusic.com/uploads/1/3/0/9/130969840/makokawiz_nitaj.pdf
    • http://mozimela.ck-monuments.com/uploads/1/3/1/6/131637881/7588880.pdf
    • http://files.burniture.com/uploads/1/3/1/3/131383581/637723.pdf
    • https://cdn.shopify.com/s/files/1/0437/4223/2725/files/14120675978.pdf
    • https://cdn.shopify.com/s/files/1/0433/8991/1194/files/53919546937.pdf
    • https://cdn.shopify.com/s/files/1/0465/1492/9822/files/badrinath_telugu_movie_audio_songs_free.pdf
    • https://cdn.shopify.com/s/files/1/0435/1927/9258/files/1063758531.pdf
    • https://cdn.shopify.com/s/files/1/0460/2272/1695/files/vukezolepupa.pdf
    • https://cdn.shopify.com/s/files/1/0431/6689/2186/files/nene_ambani_telugu_naa_songs_free.pdf
    • https://cdn.shopify.com/s/files/1/0427/8072/1311/files/basal_ganglia_function.pdf
    • https://cdn.shopify.com/s/files/1/0433/1195/6126/files/xujejiwewomezavixot.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/rabilividobakomitunaxizug.pdf
    • https://cdn.shopify.com/s/files/1/0428/4334/0956/files/fusamudax.pdf
    • https://cdn.shopify.com/s/files/1/0437/0766/2504/files/the_roman_catholic_bible.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/

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00006678.bin
409045bfc20f3df6d6efee90b878f3ea51c57893e5c7ad19e7a5ea5ebf35c88b
pdf-font-stream PDF embedded font (sfnt) at offset 0x6678 5648 bytes
font_01_sfnt_off0000798b.bin
b253ade467137f120603c9b6597ccff66ab03e1e4d9079ef4b3e6b9042616eaf
pdf-font-stream PDF embedded font (sfnt) at offset 0x798B 10232 bytes