Malicious PDF — malware analysis report

Static analysis result for SHA-256 7d63369d5a45156d…

MALICIOUS

PDF

49.9 KB Created: 2020-08-08 18:41:25 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 3e90ef908e78158a7f8029e6f9e65719 SHA-1: b51c7cd5462899c359949360695c7557847a37b4 SHA-256: 7d63369d5a45156d069fd2cba3b05c602f04c72ce6152bef3de49258b4c044b9
120 Risk Score

Malware Insights

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

The PDF contains a large number of embedded links, many of which point to a link farm hosted on cdn.shopify.com. One critical heuristic identified a link to a known malicious redirector at https://ttraff.ru/pify. The document body, though heavily obfuscated, contains text related to centrifugation techniques, likely a lure to disguise the malicious intent. No scripts were extracted from this sample.

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.ru/pify?keyword=principle+of+centrifugation+technique+pdf
    • http://mepeno.ivethcaruso.com/uploads/1/3/1/8/131856158/4749983.pdf
    • http://files.somethingsafoote.com/uploads/1/3/0/7/130739776/lilafam.pdf
    • http://files.seattleshoulderdoc.com/uploads/1/3/0/9/130969985/novukakixapapepeja.pdf
    • http://files.givingsquared.com/uploads/1/3/1/6/131637218/kolib_gevubululivoj_gopugopu_pagedibaro.pdf
    • http://files.teachersfortomorrow.net/uploads/1/3/1/6/131606789/sisifoso.pdf
    • https://cdn.shopify.com/s/files/1/0434/3123/1637/files/skip_beat_live_action.pdf
    • https://cdn.shopify.com/s/files/1/0427/8131/1132/files/16535672228.pdf
    • https://cdn.shopify.com/s/files/1/0438/5731/3957/files/leaders_are_both_born_and_made.pdf
    • https://cdn.shopify.com/s/files/1/0437/9879/0301/files/kemalobidivuxegikaxufo.pdf
    • https://cdn.shopify.com/s/files/1/0429/4069/4684/files/kitavudozeb.pdf
    • https://cdn.shopify.com/s/files/1/0436/7741/7625/files/80033293307.pdf
    • https://cdn.shopify.com/s/files/1/0429/6415/6582/files/spread_offense_run_plays.pdf
    • https://cdn.shopify.com/s/files/1/0430/9693/2501/files/999023358.pdf
    • https://cdn.shopify.com/s/files/1/0432/4671/5040/files/23242392559.pdf
    • https://cdn.shopify.com/s/files/1/0431/0512/4516/files/bavomitesema.pdf
    • https://cdn.shopify.com/s/files/1/0427/9920/2467/files/sudovisusuwazenumagamiwu.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_off00007856.bin
ce436d75687788507441822949ffd17873489a2ef684c1fd511f110157e06c3a
pdf-font-stream PDF embedded font (sfnt) at offset 0x7856 5248 bytes
font_01_sfnt_off00008a0f.bin
0177ccdca656c5f1d63be8747094714fa93c72ac5db862ce0f8e37b76515d73c
pdf-font-stream PDF embedded font (sfnt) at offset 0x8A0F 10092 bytes
font_02_sfnt_off0000ac7b.bin
4fcfa7c68d76e23b667942a3ac892d2d5d88346478daafc61479ad4df4af3dd3
pdf-font-stream PDF embedded font (sfnt) at offset 0xAC7B 4324 bytes