Malicious PDF — malware analysis report

Static analysis result for SHA-256 ccb7c9f70befa1b9…

MALICIOUS

PDF

52.0 KB Created: 2020-08-22 18:26:47 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 86b676508a9261c486818ec7379fc53f SHA-1: 3d4f5dab0aee855f001f106160f9145fbea9eb79 SHA-256: ccb7c9f70befa1b98d7bfb09f3c16629ffa0845760bd41321d6c38423d089d37
120 Risk Score

Malware Insights

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

The PDF contains a heuristic firing for a malicious redirector link, pointing to `https://ttraff.com/pify?keyword=attunity+replicate+user+guide+6.+1`. It also contains a large number of embedded links, many of which are hosted on `cdn.shopify.com` but point to PDFs, suggesting a link farm or SEO poisoning tactic. The document body, though heavily obfuscated, contains the same malicious URL. The primary attack pattern involves luring the user to click the malicious link, which likely leads to further malicious content or exploitation.

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=attunity+replicate+user+guide+6.+1
    • http://bajal.provisopartners.com/uploads/1/3/0/7/130740073/kuwok_zezunizerir_piposu.pdf
    • http://vuxopad.medtechwearables.com/uploads/1/3/1/3/131379730/7769098.pdf
    • http://files.stamellstring.com/uploads/1/3/2/6/132683142/847b5.pdf
    • http://files.sissonvillechurchofchrist.org/uploads/1/3/0/7/130776413/wesavotajejogeturuf.pdf
    • http://durow.riveflowyoga.com/uploads/1/3/1/4/131454950/buzifusalatapos-zeliwirabejepe-fepemaletotedet-gupozitoxuwep.pdf
    • https://cdn.shopify.com/s/files/1/0431/7764/0092/files/cerebro_en_llamas_libro_gratis.pdf
    • https://cdn.shopify.com/s/files/1/0435/7554/1919/files/20838795234.pdf
    • https://cdn.shopify.com/s/files/1/0458/5973/3657/files/2337983058.pdf
    • https://cdn.shopify.com/s/files/1/0430/5158/1597/files/38567386809.pdf
    • https://cdn.shopify.com/s/files/1/0437/1018/5621/files/neural_networks_and_back_propagation_algorithm.pdf
    • https://cdn.shopify.com/s/files/1/0431/2740/6746/files/dogit.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/nakawefefaf.pdf
    • https://cdn.shopify.com/s/files/1/0431/3173/2125/files/loctite_hy_4060_gy.pdf
    • https://cdn.shopify.com/s/files/1/0437/7988/3170/files/gidijajazagi.pdf
    • https://cdn.shopify.com/s/files/1/0433/4052/9816/files/69022384028.pdf
    • https://cdn.shopify.com/s/files/1/0429/2739/0887/files/legilisumemizoze.pdf
    • https://cdn.shopify.com/s/files/1/0438/8395/4328/files/fool_for_you_piano_sheet_music_free.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_off00008c1d.bin
3cde73c47a36a9ee90b43a1372e1578d3ace0ee3190474b42d22b5dcbfc1a560
pdf-font-stream PDF embedded font (sfnt) at offset 0x8C1D 5572 bytes
font_01_sfnt_off00009f2d.bin
75fc1cf4dfd643918343a181806fe9cdc80a628bfe0a6f70b271ff41138a58b0
pdf-font-stream PDF embedded font (sfnt) at offset 0x9F2D 10456 bytes