Malicious PDF — malware analysis report

Static analysis result for SHA-256 9c85a528d920a049…

MALICIOUS

PDF

48.9 KB Created: 2020-08-21 16:14:15 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 671c4ad90f4f169a46150d245b2b0060 SHA-1: ac03250e0b48edeae42e0b009779f550c07e7746 SHA-256: 9c85a528d920a049f4da6618dfb70d773ba02e62be60768c543308ee737f61ee
120 Risk Score

Malware Insights

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

The PDF contains a link farm, with multiple embedded URLs pointing to external resources. One critical heuristic identified a link to a known malicious redirector infrastructure at 'https://ttraff.ru/pify?keyword=alita+full+movie++in+tamilrockers'. The document body, though heavily obfuscated, also contains this URL and references to 'Alita full movie in tamilrockers', suggesting a lure for users seeking pirated content. The presence of numerous benign-looking Shopify links likely serves to obscure the malicious redirector.

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=alita+full+movie++in+tamilrockers
    • http://files.clearcutoregon.com/uploads/1/3/0/7/130739309/7e5597c3326e6c.pdf
    • http://files.kretzmerconsulting.com/uploads/1/3/0/9/130969708/9bfecc2.pdf
    • https://cdn.shopify.com/s/files/1/0431/5670/1348/files/juzuwumewivetefubomuwa.pdf
    • https://cdn.shopify.com/s/files/1/0431/4939/4080/files/9735298409.pdf
    • https://cdn.shopify.com/s/files/1/0428/9570/4227/files/53296341115.pdf
    • https://cdn.shopify.com/s/files/1/0428/9318/1095/files/bapirekaxejazi.pdf
    • https://cdn.shopify.com/s/files/1/0437/5330/8314/files/nrsv_bible_with_apocrypha.pdf
    • https://cdn.shopify.com/s/files/1/0433/6546/6270/files/lbs_to_kg_formula.pdf
    • https://cdn.shopify.com/s/files/1/0436/9242/5384/files/narodevadepu.pdf
    • https://cdn.shopify.com/s/files/1/0431/6866/1670/files/59081070451.pdf
    • https://cdn.shopify.com/s/files/1/0437/0386/1401/files/3765318810.pdf
    • https://cdn.shopify.com/s/files/1/0430/4273/4237/files/44212136484.pdf
    • https://cdn.shopify.com/s/files/1/0437/8581/4173/files/tarokupijufixisamasota.pdf
    • https://cdn.shopify.com/s/files/1/0427/8406/3654/files/68516452694.pdf
    • https://cdn.shopify.com/s/files/1/0429/4131/7276/files/23050217744.pdf
    • https://cdn.shopify.com/s/files/1/0429/3161/7945/files/bifowolaxinopiripogob.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_004_off0000606e.bin
bed0e4ef8ef411386459b98b10c7a8e9b64c65ae243e07bd0efdb3d890f086ad		 decompressed-pdf-stream PDF FlateDecoded stream at offset 0x606E 10948 bytes
font_00_sfnt_off00004f00.bin
6a70eb91924bf4d9bdc21ee5ce36a46990ae8206c676d9a09d878e77ee29bcdb		 pdf-font-stream PDF embedded font (sfnt) at offset 0x4F00 5140 bytes
font_02_sfnt_off00007cc5.bin
d7ea1fcb56881155405295582d78bbd7a96c40251f9b7d9bd0874708c9c87c0b		 pdf-font-stream PDF embedded font (sfnt) at offset 0x7CC5 1716 bytes
font_03_sfnt_off0000854e.bin
c3211a83fa07f5b37d5c9d7959631705d5b30dc6b3fab2dbe38606acd44687eb		 pdf-font-stream PDF embedded font (sfnt) at offset 0x854E 14840 bytes

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