Malicious PDF — malware analysis report

Static analysis result for SHA-256 2fe55063095d3fbd…

MALICIOUS

PDF

57.3 KB Created: 2020-08-23 18:05:18 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 613afb3800ee5c152db3ae70c8f085d3 SHA-1: 60005d3331739e23307a6f3e7545a4c1729692ab SHA-256: 2fe55063095d3fbd4c68565a899580e395b6609e28c8aa302afcddd253013f3a
120 Risk Score

Malware Insights

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

The PDF contains a large number of embedded links, many of which point to a link farm hosted on Shopify. One of these links redirects to a malicious domain, ttraff.com, which is likely used to serve further malicious content. The document body, though heavily obfuscated, contains the same keyword as the malicious URL, suggesting a lure to trick users into clicking the links. No scripts were extracted from this sample.

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.com/pify?keyword=que+es+estadistica+descriptiva+e+inferencial+pdf
    • http://rinupam.rachelraab.com/uploads/1/3/1/4/131438003/kugoduwavuvezepuwifo.pdf
    • http://files.chipsyhealth.org/uploads/1/3/1/8/131871714/5879340.pdf
    • https://cdn.shopify.com/s/files/1/0435/9212/2536/files/6751337098.pdf
    • https://cdn.shopify.com/s/files/1/0465/4684/5854/files/minecraft_creeper_man_skin.pdf
    • https://cdn.shopify.com/s/files/1/0434/5384/1560/files/64666950916.pdf
    • https://cdn.shopify.com/s/files/1/0434/2385/8850/files/lowes_oxford_al.pdf
    • https://cdn.shopify.com/s/files/1/0435/5840/4245/files/xuwevopazekidekokoduxen.pdf
    • https://cdn.shopify.com/s/files/1/0433/1490/5256/files/auto_format_visual_studio_c.pdf
    • https://cdn.shopify.com/s/files/1/0434/9689/8724/files/puregisapesum.pdf
    • https://cdn.shopify.com/s/files/1/0463/2343/3634/files/aetctbo_song_320kbps.pdf
    • https://cdn.shopify.com/s/files/1/0431/0269/9681/files/nopesemipivujazonur.pdf
    • https://cdn.shopify.com/s/files/1/0433/9171/3447/files/zawazuxuki.pdf
    • https://cdn.shopify.com/s/files/1/0429/7703/4399/files/somenokunujogumazaj.pdf
    • https://cdn.shopify.com/s/files/1/0431/4349/5841/files/86034277271.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_off000089e7.bin
d4dd90e4a36eb8b4bc458d0288efbc85b23af32ef2d1fe9ad79664733e412bde		 pdf-font-stream PDF embedded font (sfnt) at offset 0x89E7 5268 bytes
font_01_sfnt_off00009be3.bin
c6ed46c4b8119397a13ce693cd9f4a1b612d2aafe5e29223c42cae3d9518eb04		 pdf-font-stream PDF embedded font (sfnt) at offset 0x9BE3 2212 bytes
font_02_sfnt_off0000a55b.bin
21c96ad684f0eeea2487e7caf2e97f9ce66001992b662930e0830f74fee81bdc		 pdf-font-stream PDF embedded font (sfnt) at offset 0xA55B 16036 bytes

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