Malicious PDF — malware analysis report

Static analysis result for SHA-256 293c0b2cc558be4a…

MALICIOUS

PDF

45.0 KB Created: 2020-08-05 22:46:35 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 402084966e25d9f9c326418de63dbca0 SHA-1: a1acf868b1fc5fc9df0667c3f2cd75aa0c816470 SHA-256: 293c0b2cc558be4aa0b77725b91512e2c2bcbf01f80600f962dc6e12b3367175
120 Risk Score

Malware Insights

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

The PDF contains a critical heuristic firing for a malicious redirector link pointing to 'ttraff.com'. The document body, though partially corrupted, contains text related to 'printable calendar pdf weekly' and the authoring application 'wkhtmltopdf', suggesting a lure. The PDF also exhibits characteristics of a link farm, with numerous embedded URLs, many pointing to Shopify domains, likely for SEO manipulation to increase visibility of the malicious redirector.

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.com/pify?keyword=printable+calendar+pdf+weekly
    • http://files.bolingbrookhistprescomm.org/uploads/1/3/0/7/130739415/lumubulexokixaruvogu.pdf
    • http://files.theacupuncturepracticeexeter.com/uploads/1/3/2/6/132681440/bawogesukifopimuz.pdf
    • http://files.heysugarcakes.com.au/uploads/1/3/0/9/130969934/471109.pdf
    • http://xidagis.caribbeanmemoryproject.com/uploads/1/3/1/3/131383544/a873dd8.pdf
    • http://files.pictalie.com/uploads/1/3/0/8/130815137/xuvavudobe.pdf
    • https://cdn.shopify.com/s/files/1/0431/3314/1149/files/5037363441.pdf
    • https://cdn.shopify.com/s/files/1/0433/4272/5275/files/schizophrenia_journal_articles.pdf
    • https://cdn.shopify.com/s/files/1/0431/6885/8276/files/47633841401.pdf
    • https://cdn.shopify.com/s/files/1/0432/9416/3109/files/tuvosiwixapirupikagim.pdf
    • https://cdn.shopify.com/s/files/1/0432/3206/7748/files/bamavigijaxugo.pdf
    • https://cdn.shopify.com/s/files/1/0432/1348/8292/files/78743517773.pdf
    • https://cdn.shopify.com/s/files/1/0432/5690/5885/files/pupofidawez.pdf
    • https://cdn.shopify.com/s/files/1/0431/1960/7962/files/vukijufemudivopumokovofod.pdf
    • https://cdn.shopify.com/s/files/1/0431/2875/0241/files/zumirujijezed.pdf
    • https://cdn.shopify.com/s/files/1/0430/5167/9893/files/96954920114.pdf
    • https://cdn.shopify.com/s/files/1/0432/1509/3917/files/9100173822.pdf
    • https://cdn.shopify.com/s/files/1/0431/8402/9854/files/berijudogetenak.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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off000064eb.bin
c93f969b5701f8e10046e669cfb64a2e1bcafd0fd61135df61de5bdf694ca376
pdf-font-stream PDF embedded font (sfnt) at offset 0x64EB 5048 bytes
font_01_sfnt_off00007628.bin
da81933648641efa40dbd1f93eda32527437cc47e8cff72ad054ee67d27eb137
pdf-font-stream PDF embedded font (sfnt) at offset 0x7628 10080 bytes
font_02_sfnt_off000098aa.bin
9f355172d696dda274cac500966718f112ce76951f19577ac4888987ea6471b2
pdf-font-stream PDF embedded font (sfnt) at offset 0x98AA 4324 bytes