Malicious PDF — malware analysis report

Static analysis result for SHA-256 c146acb998d2850c…

MALICIOUS

PDF

40.4 KB Created: 2020-08-12 21:38:00 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 90f1ca5796fb8da717b06998152949be SHA-1: 6edffb926b77511d0134711847f1b88241c67f0a SHA-256: c146acb998d2850c79dff1ed0d3777850468f7dc365c76a604383d3787f13527
120 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1200 Hardware Addends T1059.001 PowerShell

The PDF contains a large number of embedded links, many of which point to a link farm hosted on Shopify. One critical heuristic identified a link to a known malicious redirector, ttraff.cc, which is likely intended to lead the user to a malicious site. The document body itself is largely unreadable binary data, but the presence of the malicious redirector and the link farm strongly suggest a phishing or malicious redirection attempt.

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/wb?keyword=aprilia%20sr%2050%20r%20manual
    • http://files.jd3radio.com/uploads/1/3/0/7/130738614/ae1d5d7f.pdf
    • http://files.asrcleaningcompany.com/uploads/1/3/2/7/132741339/2318857.pdf
    • http://fadut.eastendjourneys.com/uploads/1/3/1/4/131438096/davawopasijego.pdf
    • http://mufulik.mojowitch.com/uploads/1/3/0/7/130776836/jizekomanudi.pdf
    • https://cdn.shopify.com/s/files/1/0432/5507/0880/files/robozivadavikosalamuxej.pdf
    • https://cdn.shopify.com/s/files/1/0429/3351/8489/files/marine_corps_hymn_lyrics.pdf
    • https://cdn.shopify.com/s/files/1/0433/8502/8758/files/osrs_elite_clue_rewards.pdf
    • https://cdn.shopify.com/s/files/1/0448/1312/3744/files/personal_history_statement.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/84574839703.pdf
    • https://cdn.shopify.com/s/files/1/0439/4817/9611/files/samefuwar.pdf
    • https://cdn.shopify.com/s/files/1/0429/4855/9004/files/dawenesanikibikipu.pdf
    • https://cdn.shopify.com/s/files/1/0434/5207/2088/files/dodofitabuwipigigisop.pdf
    • https://cdn.shopify.com/s/files/1/0449/5199/4536/files/pajoludux.pdf
    • https://cdn.shopify.com/s/files/1/0430/8716/7645/files/84373297405.pdf
    • https://cdn.shopify.com/s/files/1/0430/3824/5017/files/alanbrooke_diaries.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_off0000615b.bin
8de3e21f3950950de276fcc2b12eae780446b939bee66f98f48eda79763e3358		 pdf-font-stream PDF embedded font (sfnt) at offset 0x615B 5220 bytes
font_01_sfnt_off000072f9.bin
2d94c1e88586f5d754e435e4f83fe5a740b2c5374c6ae68d97aa0b18dc7c99e7		 pdf-font-stream PDF embedded font (sfnt) at offset 0x72F9 10136 bytes

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