Malicious PDF — malware analysis report

Static analysis result for SHA-256 3fcda57e030e0fc1…

MALICIOUS

PDF

48.0 KB Created: 2020-08-09 20:49:30 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 4e3038c42dbf9f45001856f439fb4f16 SHA-1: f4ee80a9f685b3d4b2bd5e2a78f4cc38bee43655 SHA-256: 3fcda57e030e0fc1486967c00ac9f0cc6270c32bb95a59e441302df4703cc9cd
148 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.ru'. Additionally, it exhibits characteristics of a link farm, with numerous embedded URLs, many hosted on Shopify. The document body, though heavily obfuscated, also contains the malicious redirector URL and several benign-looking Shopify URLs. The presence of a 'download button' lure and a callback lure suggests a phishing or scam attempt. No scripts were extracted from this sample.

Heuristics 5

  • 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.
  • Callback phishing phone lure medium SE_CALLBACK_LURE
    Document asks the user to call a phone number in billing, refund, subscription, fraud, or security context — consistent with callback phishing or tech-support scam patterns
  • Visual download / call-to-action button lure low SE_DOWNLOAD_BUTTON
    Document contains a call-to-action phrase ('Click here to download', 'Download Now', etc.) — low-signal unless other findings point to a malicious workflow
  • 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=alcohol+phenol+and+ether+pdf+target+publications
    • http://pupolul.clarkpiperepair.com/uploads/1/3/1/6/131637016/5d040c95f79d.pdf
    • http://files.smithsolarlab.com/uploads/1/3/1/3/131381605/71b6ebe93d39.pdf
    • http://files.churchonthehillglenavon.com/uploads/1/3/1/3/131379639/polowanun-xegiguge-vefukabilob.pdf
    • http://files.bee-kleen.com/uploads/1/3/2/6/132681887/4998236.pdf
    • https://cdn.shopify.com/s/files/1/0448/4333/5837/files/civil_engineering_drawing.pdf
    • https://cdn.shopify.com/s/files/1/0429/5720/9753/files/drop_a_pin_google_maps.pdf
    • https://cdn.shopify.com/s/files/1/0434/5567/6580/files/new_functional_training_for_sports_download.pdf
    • https://cdn.shopify.com/s/files/1/0437/6225/3978/files/54188729335.pdf
    • https://cdn.shopify.com/s/files/1/0434/7019/2802/files/11268997580.pdf
    • https://cdn.shopify.com/s/files/1/0434/7451/8178/files/gaguwulajigemarasubodatox.pdf
    • https://cdn.shopify.com/s/files/1/0435/0276/4184/files/tubimelexezikuxezox.pdf
    • https://cdn.shopify.com/s/files/1/0437/2283/4071/files/fasife.pdf
    • https://cdn.shopify.com/s/files/1/0433/1926/3397/files/13819330871.pdf
    • https://cdn.shopify.com/s/files/1/0431/2327/7973/files/zobepak.pdf
    • https://cdn.shopify.com/s/files/1/0430/8212/1377/files/gozujarexaxan.pdf
    • https://cdn.shopify.com/s/files/1/0433/1008/8357/files/bederexodexu.pdf
    • https://cdn.shopify.com/s/files/1/0428/3708/2271/files/starcraft_terran_units.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_off00006615.bin
850b0c25c9bebe2c43cc0fbba550665d23417618b53db47f2ad00430c1806b2b		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6615 5544 bytes
font_01_sfnt_off000078e4.bin
23570be6032e5b5ef886f186546bb3ae28677253be6fa52997762b38a0f7a0ef		 pdf-font-stream PDF embedded font (sfnt) at offset 0x78E4 10616 bytes
font_02_sfnt_off00009d42.bin
6e3fbd491d8b71441998836ddca0d0c102716a221ea14f8143929167ad9a79b3		 pdf-font-stream PDF embedded font (sfnt) at offset 0x9D42 16164 bytes

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