Malicious PDF — malware analysis report

Static analysis result for SHA-256 312f12714915a024…

MALICIOUS

PDF

41.7 KB Created: 2020-09-15 06:44:22 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 02fa6e7e5e630e2060085f31391cddc5 SHA-1: f6921b231380c1bdf229110498fad8fbf285b82c SHA-256: 312f12714915a0249d42e4dfe79ff08816c62defee0864e474c9a80da24f4571
150 Risk Score

Malware Insights

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

The PDF contains a prominent link related to 'Cambridge national lending credit requirements' which redirects through malicious infrastructure. The PDF also functions as a link farm, containing numerous external links, many of which point to similarly structured PDF files. This suggests a phishing or scam attempt designed to drive traffic to malicious sites.

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

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.me/pify?keyword=cambridge+national+lending+credit+requirements
    • http://files.londonderryhomeowners.com/uploads/1/3/1/8/131871730/siwufudipab.pdf
    • http://files.alabamaheritage.com/uploads/1/3/2/6/132680813/6014903.pdf
    • http://files.patriciajosephine.com/uploads/1/3/1/4/131452922/8270fe992.pdf
    • http://files.kellieabernethy.com/uploads/1/3/0/9/130969001/netub-levike-kuwukirezi-wotijixo.pdf
    • https://static.usrfiles.com/ugd/0c8cc8_375c3644f20545d1acaa3aa52b7ff243.pdf
    • https://static.usrfiles.com/ugd/599f1c_96fc53e49de1489ba92ce4c240aae2ba.pdf
    • https://static.usrfiles.com/ugd/db93e9_e4fe40ab1c3943b8b0aed5f8ae552639.pdf
    • https://static.usrfiles.com/ugd/03ae60_5e812868c7e549798eee92cd42548492.pdf
    • https://static.usrfiles.com/ugd/b8c837_6600a5087b08426593fa40eed2ac5b6b.pdf
    • https://cdn.shopify.com/s/files/1/0443/0331/9196/files/23017194775.pdf
    • https://cdn.shopify.com/s/files/1/0462/5979/8167/files/pokemon_sword_and_shield_guide_book_reddit.pdf
    • https://cdn.shopify.com/s/files/1/0433/6667/8686/files/katerekavolumijaru.pdf
    • https://cdn.shopify.com/s/files/1/0481/3946/8961/files/48313476029.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/48466687054.pdf
    • https://cdn.shopify.com/s/files/1/0434/0305/1171/files/47559894968.pdf
    • https://cdn.shopify.com/s/files/1/0433/7005/3784/files/avi_to_dvd.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_off00006371.bin
c5ea50fd21d3c8168c9e5fb739ac4346c6b8582b5649f26d7618cf91e98bc910		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6371 5428 bytes
font_01_sfnt_off000075bb.bin
81a3df8fd4bfae41ee84e34fcc7804b788934bb40103fd0ac0a24612cbcb9a53		 pdf-font-stream PDF embedded font (sfnt) at offset 0x75BB 10696 bytes

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