Malicious PDF — malware analysis report

Static analysis result for SHA-256 faa5d5e359ab3452…

MALICIOUS

PDF

38.2 KB Created: 2020-08-03 22:20:24 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 0361009a3684baa0af0d0e85bfa73104 SHA-1: 0edf2654336c440ecf1d30efa9d29a9026b62359 SHA-256: faa5d5e359ab345276de7c5c925fcdd04afbe82612fc96239a6939a0d65f62af
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1204.002 Malicious Link T1059.001 PowerShell

The PDF file contains a large number of embedded links, many of which point to external PDF files hosted on Shopify. One of these links, 'https://ttraff.com/pify?keyword=canela+de+velho+bula+pdf', is identified as a malicious redirector. The presence of a visible LOLBin command execution instruction suggests the document may also attempt to execute malicious code or scripts. The combination of a link farm and a malicious redirector indicates a phishing or malware distribution attempt.

Heuristics 4

  • 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.
  • Visible LOLBin command execution instruction high SE_LOLBIN_RUN_COMMAND
    Document contains instructions or visible command text involving Windows script/execution tools such as PowerShell, mshta, cmd, rundll32, or regsvr32
  • 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=canela+de+velho+bula+pdf
    • http://vefal.ruiqichen.info/uploads/1/3/1/3/131383949/dexapu.pdf
    • http://files.saintjameslaconia.org/uploads/1/3/1/4/131407887/bf8a9.pdf
    • http://files.bumpsinmotion.com/uploads/1/3/1/4/131406173/rizufuwikala.pdf
    • http://files.rollepodiatry.co.uk/uploads/1/3/0/7/130738859/6798975.pdf
    • https://cdn.shopify.com/s/files/1/0448/5450/9729/files/chinese_to_english_translator_online.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/welilavuruwad.pdf
    • https://cdn.shopify.com/s/files/1/0433/7709/8913/files/gordon_west_general_class.pdf
    • https://cdn.shopify.com/s/files/1/0428/1411/1903/files/8542937040.pdf
    • https://cdn.shopify.com/s/files/1/0437/7185/5002/files/sony_str_de445_manual.pdf
    • https://cdn.shopify.com/s/files/1/0437/8954/9729/files/vijayaniki_5_metlu_telugu_book.pdf
    • https://cdn.shopify.com/s/files/1/0431/3071/6314/files/initial_counseling_army.pdf
    • https://cdn.shopify.com/s/files/1/0428/2168/1315/files/angel_fire_snow_report.pdf
    • https://cdn.shopify.com/s/files/1/0429/9482/7418/files/tararipozezejogazufokad.pdf
    • https://cdn.shopify.com/s/files/1/0434/0586/9213/files/58727053055.pdf
    • https://cdn.shopify.com/s/files/1/0429/6137/1290/files/foundations_of_parasitology.pdf
    • https://cdn.shopify.com/s/files/1/0433/8289/8840/files/2989445266.pdf
    • https://cdn.shopify.com/s/files/1/0447/9765/7248/files/php_curl_post.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/62386903812.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_off0000568a.bin
558c9dfe9de66f6a8226b8fee8e2ff00f424d743eb0b8dbe691f612f6ab8cbb7
pdf-font-stream PDF embedded font (sfnt) at offset 0x568A 4960 bytes
font_01_sfnt_off0000676c.bin
ddb91c3f96260b61c55000493c2703003028dec82f86d95d930ab08ca1cfbf91
pdf-font-stream PDF embedded font (sfnt) at offset 0x676C 11616 bytes