Malicious PDF — malware analysis report

Static analysis result for SHA-256 53d01f3025dde8b3…

MALICIOUS

PDF

41.8 KB Created: 2020-09-19 10:10:39 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 62d5aa48ddaf1dd87c391fe0964a7636 SHA-1: 55595b975405b524ea6427b0a9d0b3b7d9e895e1 SHA-256: 53d01f3025dde8b3525840dd13d2ac757c13565962576b7d677d023978491297
120 Risk Score

Malware Insights

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

The PDF contains a large number of embedded links, with several pointing to known malicious redirector infrastructure. The document body, though heavily obfuscated, also contains URLs that are part of this link farm. This suggests the primary purpose is to direct users to malicious sites, potentially for phishing or malware distribution.

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/wix?keyword=this+is+the+only+level+4+walkthrough
    • http://fagoluxa.escollins.com/uploads/1/3/1/6/131636817/ec98eb7f086d2.pdf
    • http://files.esulix.com/uploads/1/3/1/0/131070872/f1411b1453c418.pdf
    • http://jupun.blackgypsymamawagon.net/uploads/1/3/1/4/131407395/tuvig.pdf
    • http://kajegina.whartontrust.org/uploads/1/3/1/3/131383599/59a6696b95bdc.pdf
    • http://files.blowingoakfarm.com/uploads/1/3/0/9/130969498/nidixulusus_fojetorelamuti_pupodowagudowuk_dopoxobi.pdf
    • https://96a4d579-2da6-4ab9-b8d0-f698dccb18e8.filesusr.com/ugd/5926b4_22e84ba26c7d480aba7ee889cb553b7c.pdf?index=true
    • https://94253946-ba7a-4218-a7ac-0dfb80037d4e.filesusr.com/ugd/1e533a_7d787a3306d948b1a30e3ae03b05be68.pdf?index=true
    • https://f625b073-d6c3-4034-bafe-e6b7ad010f00.filesusr.com/ugd/45fd81_2176d7694080451f9c8ff328d656b174.pdf?index=true
    • https://6e79251d-cbb7-4ba4-a77b-f88d0577cefe.filesusr.com/ugd/38062a_eb48ed658e6f4c2b8d8f9a199a335322.pdf?index=true
    • https://acfeec44-fff6-466f-bce5-71a56d29e979.filesusr.com/ugd/df7b34_51babb22ae3641aab4c89eb48270bc7f.pdf?index=true
    • https://21913ff8-d3b8-4acf-aace-3d464277ec7c.filesusr.com/ugd/8e7730_4eece14e110b4600a5a686ad6d401642.pdf?index=true
    • https://bd6f63d4-2aba-4d80-8034-0819d2921de2.filesusr.com/ugd/3ed902_6f087aac7d07406b89e9606cbbfd4427.pdf?index=true
    • https://cdn.shopify.com/s/files/1/0439/3664/5275/files/somosos.pdf
    • https://cdn.shopify.com/s/files/1/0432/8072/8224/files/41448804782.pdf
    • https://cdn.shopify.com/s/files/1/0429/1434/9215/files/21893883058.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_off0000644e.bin
5965ee5aceccc4a6faf03041b50fe10d473623858e66f3993d459c16c36f0e3f		 pdf-font-stream PDF embedded font (sfnt) at offset 0x644E 5300 bytes
font_01_sfnt_off00007673.bin
2d3000d7f72f45c28cf2971063023fa2ddc9e6f73beab8250979e5812c9750da		 pdf-font-stream PDF embedded font (sfnt) at offset 0x7673 10636 bytes

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