Malicious PDF — malware analysis report

Static analysis result for SHA-256 28aeebe3bca3d1eb…

MALICIOUS

PDF

43.2 KB Created: 2020-08-22 12:58:09 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 4b7dd6fafa9dce61b5a043c6086a3466 SHA-1: 43109fd07122513b9566ac9adcf3654bd2950e82 SHA-256: 28aeebe3bca3d1ebd55845377bcdde9f5b5b8a748fb1b12c2510aa267c3581c4
120 Risk Score

Malware Insights

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

The PDF contains multiple embedded links, with a critical heuristic firing for a malicious redirector at 'https://ttraff.com/pify?keyword=dungeons+of+dredmor+guide'. The document body, though heavily obfuscated, contains references to 'Dungeons of dredmor guide' and the redirector URL, suggesting a lure to disguise malicious intent. The presence of numerous external links, including one to a Shopify domain, indicates a link farm strategy, likely for SEO poisoning or distributing further payloads.

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=dungeons+of+dredmor+guide
    • http://files.stlukeslanesboro.org/uploads/1/3/0/8/130813521/0592c2463.pdf
    • http://files.finalfinishdetailing.com/uploads/1/3/2/7/132710655/levin_linebedanelu_vidaki_vukadidi.pdf
    • http://files.perspectivesinmedicine.ca/uploads/1/3/0/7/130740123/nuzarebeja_toseloxemoxajo_gawoseliwega_sakuxegudif.pdf
    • http://files.thechakrahousemn.com/uploads/1/3/0/9/130969270/bugedagalo_nikuwivodeji_fumefewineluje.pdf
    • https://cdn.shopify.com/s/files/1/0430/0010/3073/files/82091550170.pdf
    • https://cdn.shopify.com/s/files/1/0431/0823/7473/files/1425184875.pdf
    • https://cdn.shopify.com/s/files/1/0434/5223/5938/files/74614096206.pdf
    • https://cdn.shopify.com/s/files/1/0436/0693/3661/files/possessive_case_of_nouns_exercises.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/famulogux.pdf
    • https://cdn.shopify.com/s/files/1/0427/7764/1116/files/53938766326.pdf
    • https://cdn.shopify.com/s/files/1/0432/8259/6000/files/xbox_one_controller_pc_driver.pdf
    • https://cdn.shopify.com/s/files/1/0433/6245/1611/files/osrs_creature_of_fenkenstrain_quest_guide.pdf
    • https://cdn.shopify.com/s/files/1/0428/9665/4489/files/bibilazasimakowofekewusu.pdf
    • https://cdn.shopify.com/s/files/1/0431/3461/5706/files/93276613657.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_off00006c19.bin
e70fb8d313304346ee34b3b205c68656210f0f83d9a95b7b503b1f97a8200cd4		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6C19 4984 bytes
font_01_sfnt_off00007cfd.bin
5ce904c270d4b71070117f80bffe16fbc1912998d25e4253899db65ea719bac5		 pdf-font-stream PDF embedded font (sfnt) at offset 0x7CFD 10248 bytes

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