Malicious PDF — malware analysis report

Static analysis result for SHA-256 5570cecb9e9b45c2…

MALICIOUS

PDF

40.0 KB Created: 2020-09-01 01:56:14 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 789f7ad21e126ede4f0b639bd48ab0a0 SHA-1: e2c25abc653aca263a44c66caa2e48317ef3265c SHA-256: 5570cecb9e9b45c265ecc66467c0ae7566b92ba051b6399a2182b758a9b4d5c3
120 Risk Score

Malware Insights

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

The PDF file contains a heuristic firing for a malicious redirector link pointing to 'https://ttraff.com/wix?keyword=free+puzzle+template+pdf'. Additionally, it exhibits characteristics of a PDF link farm, embedding numerous external links, many of which point to Shopify domains. The document body, though heavily corrupted, contains text suggesting a lure for a 'free puzzle template pdf'. The primary attack vector appears to be social engineering via a deceptive link within the PDF.

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/wix?keyword=free+puzzle+template+pdf
    • https://static.usrfiles.com/ugd/d9d1f5_4d54b6e7e182444f8307e8fd4e7c082c.pdf
    • https://static.usrfiles.com/ugd/c0b427_c0798856e5f6497fa8506c82c99f58ca.pdf
    • https://static.usrfiles.com/ugd/e2b09b_c024b26d97ec474cb5c0e66146fb2656.pdf
    • https://static.usrfiles.com/ugd/bf650e_548188167dce46a4ae1cd8fd3fdcbd7d.pdf
    • https://cdn.shopify.com/s/files/1/0435/3956/2645/files/kehlani_you_should_be_here_album_download.pdf
    • https://cdn.shopify.com/s/files/1/0435/7016/7967/files/all_affidavit_format_in_english.pdf
    • https://cdn.shopify.com/s/files/1/0440/5110/3894/files/sulajiworagesiluta.pdf
    • https://cdn.shopify.com/s/files/1/0437/4000/4501/files/lezilibuxuregizamevob.pdf
    • https://cdn.shopify.com/s/files/1/0432/7673/0533/files/77017368719.pdf
    • https://cdn.shopify.com/s/files/1/0427/4031/8375/files/synonyms_english_list.pdf
    • https://cdn.shopify.com/s/files/1/0447/9270/9271/files/cappuccino_song_niti_taylor_free.pdf
    • https://cdn.shopify.com/s/files/1/0428/9114/9475/files/pinulebinomu.pdf
    • https://cdn.shopify.com/s/files/1/0434/3329/6028/files/national_ballast_water_management_requirements_2020.pdf
    • https://cdn.shopify.com/s/files/1/0433/5563/5880/files/71690423111.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_off00005f91.bin
e4f0714e296c53c1c9c77af1e08f5039583f66087fa07532990826a745b9a166		 pdf-font-stream PDF embedded font (sfnt) at offset 0x5F91 5016 bytes
font_01_sfnt_off00007096.bin
16d82fc12601f3dc5acd373dd4f11e1bb513383092ea18ce21d985eae7a2d0c7		 pdf-font-stream PDF embedded font (sfnt) at offset 0x7096 10248 bytes

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