Malicious PDF — malware analysis report

Static analysis result for SHA-256 ce3b4cce22b986ef…

MALICIOUS

PDF

44.4 KB Created: 2020-08-08 04:02:45 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 67594c1e2efd50def60d56bd352a7100 SHA-1: 5083efe813e41bf520b9470e06ab74e9f3880d12 SHA-256: ce3b4cce22b986ef7b23a6805242d2b0a65d0c8af17dc93b9bae464cbfaed223
120 Risk Score

Malware Insights

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

The PDF file contains a significant number of embedded URLs, with a critical heuristic firing indicating a link to known malicious redirector infrastructure. Another critical heuristic identified a large external PDF link farm, suggesting a potential SEO manipulation or content distribution scheme. The presence of these links and the nature of the heuristics strongly suggest a malicious intent, likely to lure users to malicious sites or distribute further malware. No scripts were extracted, and the document body was heavily obfuscated.

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.cc/wb?keyword=loving%20in%20truth%20poem%20pdf
    • http://files.instasync.net/uploads/1/3/0/8/130874493/zefogaluka-gosovof.pdf
    • http://files.gracenathanielsounds.com/uploads/1/3/1/4/131453934/romolir.pdf
    • http://files.hldinspections.com/uploads/1/3/0/8/130873921/radoferuso-masok-mogevisi-rawuki.pdf
    • http://files.happythoughtsoraclecardreadings.com/uploads/1/3/1/8/131871744/c4e071bb6f0118.pdf
    • https://cdn.shopify.com/s/files/1/0434/8860/8418/files/bonirififijinixivov.pdf
    • https://cdn.shopify.com/s/files/1/0432/2865/9874/files/shl_logical_reasoning_test_answers.pdf
    • https://cdn.shopify.com/s/files/1/0428/7420/8415/files/bazudokapavegerazewuxe.pdf
    • https://cdn.shopify.com/s/files/1/0431/1708/4839/files/kibejakonilo.pdf
    • https://cdn.shopify.com/s/files/1/0430/1098/2041/files/bimajakimav.pdf
    • https://cdn.shopify.com/s/files/1/0449/2463/3243/files/how_to_make_minecraft_shield.pdf
    • https://cdn.shopify.com/s/files/1/0438/5924/7264/files/luxid.pdf
    • https://cdn.shopify.com/s/files/1/0430/6547/5229/files/sotelowu.pdf
    • https://cdn.shopify.com/s/files/1/0434/1573/2376/files/98994389645.pdf
    • https://cdn.shopify.com/s/files/1/0432/8914/9608/files/miwajuxabu.pdf
    • https://cdn.shopify.com/s/files/1/0437/3400/7973/files/maxorofuvesi.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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off000063d3.bin
4c61d2f5b3bd73731bb4c420cf39d2e1a20d7bd8fbf928b18fd7d23abad0a5fa
pdf-font-stream PDF embedded font (sfnt) at offset 0x63D3 4916 bytes
font_01_sfnt_off0000746c.bin
70e1ccbb0e0971c9a45adaf949ec2cf63ff0a641b91f2e24eadf528151a9cb43
pdf-font-stream PDF embedded font (sfnt) at offset 0x746C 10120 bytes
font_02_sfnt_off00009712.bin
d1f4a20f0e35a0564be54678b929bb8c711862c507f070c2b9a6abea8daf4378
pdf-font-stream PDF embedded font (sfnt) at offset 0x9712 4324 bytes