Malicious PDF — malware analysis report

Static analysis result for SHA-256 4be4ba8c3433d810…

MALICIOUS

PDF

42.1 KB Created: 2020-08-01 20:54:24 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 5676e319dcf557b16f7661495532e823 SHA-1: 1fa6bae56ac5c4f07a84354b116839987bc02d8c SHA-256: 4be4ba8c3433d810f515e5c9c8b9e500dc3c7609071e5ec9ecfc9e4f7624d513
120 Risk Score

Malware Insights

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

The PDF file contains a link farm and a direct link to a redirector URL, disguised as a technical manual. The primary heuristic indicates the PDF links to known malicious redirector infrastructure. The document body, though heavily obfuscated, contains the target URL and references to a 'diesel engine repair manual pdf', supporting the lure. The file's purpose is to redirect the user to malicious content.

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/pify?keyword=diesel+engine+repair+manual+pdf
    • http://files.literaturehouse910.com/uploads/1/3/2/7/132740930/lufomonu.pdf
    • http://files.alpatsminiatureschnauzers.com/uploads/1/3/1/4/131407138/patir.pdf
    • http://files.voidarts.net/uploads/1/3/0/7/130739059/judinuxagis_vuboxu.pdf
    • http://files.rightmovecolorado.com/uploads/1/3/0/7/130740521/vuguz.pdf
    • http://files.hunterlegacyyearbook.org/uploads/1/3/0/7/130740211/9212805.pdf
    • https://cdn.shopify.com/s/files/1/0437/8414/3010/files/rubezegegax.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/43778875991.pdf
    • https://cdn.shopify.com/s/files/1/0428/8207/2743/files/xaruxigejawade.pdf
    • https://cdn.shopify.com/s/files/1/0429/7038/2485/files/pizagukonirure.pdf
    • https://cdn.shopify.com/s/files/1/0438/1910/6461/files/that_was_easy_button_sound.pdf
    • https://cdn.shopify.com/s/files/1/0431/2399/8874/files/sukodod.pdf
    • https://cdn.shopify.com/s/files/1/0429/8843/7655/files/lopinowejivowodub.pdf
    • https://cdn.shopify.com/s/files/1/0428/4016/2467/files/volorozasis.pdf
    • https://cdn.shopify.com/s/files/1/0433/6690/8054/files/14415341447.pdf
    • https://cdn.shopify.com/s/files/1/0435/1092/3423/files/bexuga.pdf
    • https://cdn.shopify.com/s/files/1/0433/4321/6789/files/56373163194.pdf
    • https://cdn.shopify.com/s/files/1/0437/1962/2808/files/82164241750.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_off00006597.bin
14036140ee5e1a3702cff0a2d7eacb23c666dfc40b099da4c10ef026b9770b2d		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6597 5360 bytes
font_01_sfnt_off000077c0.bin
9e8e567b5e211632aa63c482bdcfa75c90b19ffb0af7a29ef88bf4ea177bc12d		 pdf-font-stream PDF embedded font (sfnt) at offset 0x77C0 10532 bytes

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