Malicious PDF — malware analysis report

Static analysis result for SHA-256 940ce33b1edcf347…

MALICIOUS

PDF

125.9 KB Created: 2020-08-07 07:14:44 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 4d9172062071e1b9ea98bbd4918d7a66 SHA-1: 0d27b6b7ec77db653e3bbd2fa9f6e47c05db7c8d SHA-256: 940ce33b1edcf347067abe2a0e3ce8d158a5b24fa1fafa86f8d7d6d8e51ed9b1
120 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1059.001 PowerShell T1204.002 Malicious Link

The PDF file contains a large number of embedded links, with one heuristic identifying a link to a known malicious redirector at 'https://ttraff.ru/wb?keyword=surat%20al%20waqiah%20latin%20dan%20terjemahan%20pdf'. Another heuristic indicates a PDF link farm, suggesting SEO poisoning or a large-scale phishing attempt. The document body, though heavily obfuscated, contains references to URLs and appears to be a lure for the content mentioned in the URL.

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.ru/wb?keyword=surat%20al%20waqiah%20latin%20dan%20terjemahan%20pdf
    • http://files.campkenosee.net/uploads/1/3/1/3/131381288/543828.pdf
    • http://files.stemteachersnwa.org/uploads/1/3/1/4/131453917/1577338.pdf
    • http://files.springfieldmiddle.com/uploads/1/3/1/4/131438289/sopojodimu.pdf
    • http://files.oogeu.com/uploads/1/3/1/1/131164250/9350808.pdf
    • http://files.jj-figurines.com/uploads/1/3/1/3/131380292/vobagukegutav-fewezaval-pibasenajek-dewife.pdf
    • https://cdn.shopify.com/s/files/1/0429/9826/8065/files/86019085180.pdf
    • https://cdn.shopify.com/s/files/1/0434/8562/6520/files/lipid_oxidation_frankel.pdf
    • https://cdn.shopify.com/s/files/1/0435/7623/0046/files/kejavedurilijuzareni.pdf
    • https://cdn.shopify.com/s/files/1/0436/8993/5002/files/10_team_double_elimination_bracket.pdf
    • https://cdn.shopify.com/s/files/1/0427/3196/2535/files/28033558273.pdf
    • https://cdn.shopify.com/s/files/1/0434/5135/1207/files/supuvotakaduxeziwigaluva.pdf
    • https://cdn.shopify.com/s/files/1/0431/8589/7627/files/67560040524.pdf
    • https://cdn.shopify.com/s/files/1/0435/0319/0181/files/rogozazojiri.pdf
    • https://cdn.shopify.com/s/files/1/0432/8305/4757/files/pojiz.pdf
    • https://cdn.shopify.com/s/files/1/0438/1809/0653/files/zenujiwegisupenigozexo.pdf
    • https://cdn.shopify.com/s/files/1/0439/2806/0059/files/dupazase.pdf
    • https://cdn.shopify.com/s/files/1/0436/4225/7561/files/bet_on_it_lyrics.pdf
    • https://cdn.shopify.com/s/files/1/0427/6004/4710/files/nirirojaxaresumunojo.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 4

Files carved from inside the sample during analysis.

FilenameKindSourceSize
stream_005_off00019e42.bin
4b29184bdd6edc4240859bee2da1cc6edd5fc58b7f2658ea53f7889b81f397b9		 decompressed-pdf-stream PDF FlateDecoded stream at offset 0x19E42 34108 bytes
font_00_sfnt_off00016b1c.bin
8ad2c957310890482fbaba3b3d5430d24fbda1e6fc31b45d48b34d7fe1d191d9		 pdf-font-stream PDF embedded font (sfnt) at offset 0x16B1C 5272 bytes
font_01_sfnt_off00017ce4.bin
bccd8a2f75dfd2e2d5f17d6156b6f069fbeca2e77cbee263202b3cf8902684f5		 pdf-font-stream PDF embedded font (sfnt) at offset 0x17CE4 10604 bytes
font_03_sfnt_off0001d95a.bin
8405bb6ca9a6fb718a2e910e1cdde4d74ac2122cab0061dc5f772322db9c7ccd		 pdf-font-stream PDF embedded font (sfnt) at offset 0x1D95A 4324 bytes

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