Malicious PDF — malware analysis report

Static analysis result for SHA-256 0d1d677dde22a294…

MALICIOUS

PDF

45.0 KB Created: 2020-08-07 23:53:13 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: e09c2aafe2548945629671ab8eee667a SHA-1: 27cb9e07c0cf892636c229a0a843b7ef62db606a SHA-256: 0d1d677dde22a2948208b3c886b62fb8f263a1e2ca74ff314e8d393d9b0ce243
154 Risk Score

Malware Insights

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

The PDF contains numerous external links, with the primary link pointing to a known malicious redirector. The document body, though heavily obfuscated, includes text suggesting it is a seminar report, likely a lure. The ML classifier strongly indicates maliciousness, and the presence of multiple external links, including one to a redirector, suggests an attempt to lead the user to a malicious site for further exploitation.

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.com/pify?keyword=sixth+sense+technology+seminar+report+pdf
    • http://files.nplservicesinc.com/uploads/1/3/1/8/131856907/babiza_jenelur_tojokozi_tipivitikubuxi.pdf
    • http://files.conservatoriumacademy.com/uploads/1/3/1/4/131453316/f65fe7a.pdf
    • http://files.abundantlifechewelah.com/uploads/1/3/1/4/131438260/c693c7d19.pdf
    • http://gisax.lachangemakers.org/uploads/1/3/0/7/130776644/9642286.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://cdn.shopify.com/s/files/1/0433/7437/9158/files/62677080067.pdf
    • https://cdn.shopify.com/s/files/1/0434/5013/8784/files/duzeroga.pdf
    • https://cdn.shopify.com/s/files/1/0439/4539/4331/files/aspergillus_nidulans.pdf
    • https://cdn.shopify.com/s/files/1/0440/4248/5910/files/lafileretog.pdf
    • https://cdn.shopify.com/s/files/1/0430/5689/0013/files/gapuropibuseme.pdf
    • https://cdn.shopify.com/s/files/1/0437/1687/0298/files/automatic_car_parking_system_using_8051_microcontroller.pdf
    • https://cdn.shopify.com/s/files/1/0433/7644/3543/files/arab_newspaper.pdf
    • https://cdn.shopify.com/s/files/1/0434/5833/0786/files/49776846408.pdf
    • https://cdn.shopify.com/s/files/1/0431/3491/0618/files/nifupomirefenejixiwiju.pdf
    • https://cdn.shopify.com/s/files/1/0430/7084/9181/files/55303526479.pdf
    • https://cdn.shopify.com/s/files/1/0431/6797/3538/files/93913781747.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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00006686.bin
109a390e9bfcbdace02f0e6edcf44606a01b06dba82ce99afe4d4c1764863642		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6686 5840 bytes
font_01_sfnt_off00007a46.bin
a36eee06fef6ce219692c4ec918276ac99413e4fd1e3666e4031624f9289d620		 pdf-font-stream PDF embedded font (sfnt) at offset 0x7A46 1800 bytes
font_02_sfnt_off000082d3.bin
a37d75db905f47224d277430e3ebaf2d5823595aacd2d3bf13fa82a6a25a8cd1		 pdf-font-stream PDF embedded font (sfnt) at offset 0x82D3 10540 bytes

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