Malicious PDF — malware analysis report

Static analysis result for SHA-256 2cafba115738980d…

MALICIOUS

PDF

44.8 KB Created: 2020-08-08 18:45:08 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 63860f7d3d4419da71ee82e0eac3647a SHA-1: 598b3dfafc02ef97b544da46aeb58d431410ae1e SHA-256: 2cafba115738980d3e4363813dd758d7f8c31768d5591be27692a0cb47b7d7f6
120 Risk Score

Malware Insights

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

The PDF contains multiple embedded links, with one identified as a malicious redirector. The document body, though partially corrupted, includes text related to 'iala maritime buoyage system pdf' and references to 'wkhtmltopdf', suggesting a lure document. The primary malicious URL, https://ttraff.cc/pify?keyword=iala+maritime+buoyage+system+pdf, is likely used to redirect users to a phishing or scam page. Numerous other PDF links were found, many hosted on Shopify, indicating a potential link farm or content distribution network used to host malicious files.

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.cc/pify?keyword=iala+maritime+buoyage+system+pdf
    • http://files.rockbustofleet.com/uploads/1/3/1/3/131381422/wulasadajazu_nabox.pdf
    • http://wunol.finewatergems.com/uploads/1/3/2/6/132695492/luxukika.pdf
    • http://files.message6666.com/uploads/1/3/1/4/131406140/tijiwus-voxoporava-fedowum-disojum.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/46496449222.pdf
    • https://cdn.shopify.com/s/files/1/0440/9013/0584/files/affidavit_of_heirship_california.pdf
    • https://cdn.shopify.com/s/files/1/0432/4697/7179/files/lidenefu.pdf
    • https://cdn.shopify.com/s/files/1/0434/0056/0805/files/fajaxujoga.pdf
    • https://cdn.shopify.com/s/files/1/0435/4929/4756/files/construction_office_manager_job_description.pdf
    • https://cdn.shopify.com/s/files/1/0431/8153/9489/files/92997152089.pdf
    • https://cdn.shopify.com/s/files/1/0430/7088/1946/files/64395272308.pdf
    • https://cdn.shopify.com/s/files/1/0435/4090/6135/files/xivinowo.pdf
    • https://cdn.shopify.com/s/files/1/0436/2259/6768/files/76126387478.pdf
    • https://cdn.shopify.com/s/files/1/0437/1113/5894/files/mekamotatoka.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/nifafujejugafux.pdf
    • https://cdn.shopify.com/s/files/1/0428/4160/4263/files/kimegelenalibof.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_off00007177.bin
248830f975af13522df03fb28bdd1b65ec95037c4611dad9f3ce678482c09478		 pdf-font-stream PDF embedded font (sfnt) at offset 0x7177 5540 bytes
font_01_sfnt_off0000843c.bin
e4779ff492eae7f3b12f0f29c570a63a2906e2f9ad65fd17c0eab86f68de0258		 pdf-font-stream PDF embedded font (sfnt) at offset 0x843C 9928 bytes

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