Malicious PDF — malware analysis report

Static analysis result for SHA-256 2a1e6cf7ce67f0ec…

MALICIOUS

PDF

44.5 KB Created: 2020-08-08 10:44:00 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 04762d00f27dc83961f801be5ef66216 SHA-1: 42d0491380e09bbed1207ea4ea6ca86123c189af SHA-256: 2a1e6cf7ce67f0ec84c07674914bd7ddfe1186a8a471d277ca75acb3c3b2e25b
150 Risk Score

Malware Insights

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

The PDF was flagged as malicious due to a high number of embedded links, many of which are part of a link farm. One critical heuristic identified a link to known malicious redirector infrastructure. The document body contains garbled text but includes the URL https://ttraff.cc/pify?keyword=antiterrorism+and+effective+death+penalty+act+of+1996+pdf, which is also flagged as malicious. The presence of numerous links, including one to a malicious redirector, suggests an attempt to lure users to malicious sites or manipulate search engine rankings.

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

Heuristics 3

  • 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.
  • 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=antiterrorism+and+effective+death+penalty+act+of+1996+pdf
    • http://butelivi.charmedbordercollies.com/uploads/1/3/0/8/130814297/vumomeno.pdf
    • http://puwaneba.lesprihaitimission.com/uploads/1/3/2/3/132302782/zogabinikiwikutaw.pdf
    • http://files.mail.byboukje.nl/uploads/1/3/1/8/131871859/4433026e.pdf
    • http://files.mds-singapore.com/uploads/1/3/0/7/130776022/5245973.pdf
    • https://cdn.shopify.com/s/files/1/0432/5261/3277/files/steam_fatal_error.pdf
    • https://cdn.shopify.com/s/files/1/0430/2585/8714/files/93867959982.pdf
    • https://cdn.shopify.com/s/files/1/0432/0083/9837/files/mowugomepepilawubugarixa.pdf
    • https://cdn.shopify.com/s/files/1/0434/2457/9736/files/business_plan_proposal_in_ethiopia.pdf
    • https://cdn.shopify.com/s/files/1/0430/2022/2627/files/45725444108.pdf
    • https://cdn.shopify.com/s/files/1/0432/0880/2466/files/descriptive_paragraph_format.pdf
    • https://cdn.shopify.com/s/files/1/0427/7505/2454/files/47144536271.pdf
    • https://cdn.shopify.com/s/files/1/0429/1959/2102/files/jokusifimawesizove.pdf
    • https://cdn.shopify.com/s/files/1/0438/0426/2561/files/american_english_file_5_teacher_s_book.pdf
    • https://cdn.shopify.com/s/files/1/0433/1687/1336/files/xubusas.pdf
    • https://cdn.shopify.com/s/files/1/0428/8570/9987/files/40283621730.pdf
    • https://cdn.shopify.com/s/files/1/0431/4929/5776/files/getesaro.pdf
    • https://cdn.shopify.com/s/files/1/0431/6856/3351/files/fadopekijidedode.pdf
    • https://cdn.shopify.com/s/files/1/0435/2661/9288/files/zerurajege.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_off00006bd7.bin
c0b3720744dac800fc12f2da144bdfac07c825fb6ceea8b169a1287203755c8b
pdf-font-stream PDF embedded font (sfnt) at offset 0x6BD7 5908 bytes
font_01_sfnt_off00007fdb.bin
94fd2f079ff064f6b0abf17e48afd99cb5c40172cb35df426846524b53c52fce
pdf-font-stream PDF embedded font (sfnt) at offset 0x7FDB 10824 bytes