Malicious PDF — malware analysis report

Static analysis result for SHA-256 a5fee8817df82ad0…

MALICIOUS

PDF

52.8 KB Created: 2020-08-10 13:11:11 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 7f8b0e0b6ef03a4fd83a98023c9d4155 SHA-1: bb8123eae2153edebeeccecb333b200375f585a9 SHA-256: a5fee8817df82ad096ace74e71cf6a09b6eacc79e69c8faea995b3a1aeeef23c
120 Risk Score

Malware Insights

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

The PDF file contains a significant number of embedded external links, with one identified as a malicious redirector. The document body is heavily obfuscated and appears to be generated content, likely intended to mask the malicious links. The primary attack pattern involves luring users to click on these links, which could lead to further compromise.

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/pify?keyword=biebl+ave+maria+ssaa+pdf
    • http://files.rollinsmovingservices.com/uploads/1/3/1/3/131384070/mafavipilironugoguge.pdf
    • http://files.inclusive-arts.com/uploads/1/3/0/7/130775974/7c671a6190cc1c0.pdf
    • http://files.rogersalter.com/uploads/1/3/2/6/132682745/xokedokuvofawiz.pdf
    • http://files.drivingaids.com/uploads/1/3/1/3/131383916/dulijumezala-videmok.pdf
    • http://xulod.wermssa.com/uploads/1/3/0/8/130874493/fafakedigufiwok-dajef-ramaxew.pdf
    • https://cdn.shopify.com/s/files/1/0428/0716/5095/files/20231337467.pdf
    • https://cdn.shopify.com/s/files/1/0438/2585/6662/files/lautramont_gaston_bachelard.pdf
    • https://cdn.shopify.com/s/files/1/0429/5340/8675/files/9935271861.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/44240048578.pdf
    • https://cdn.shopify.com/s/files/1/0437/9846/2624/files/vibubonaludegif.pdf
    • https://cdn.shopify.com/s/files/1/0436/1430/6466/files/46361030928.pdf
    • https://cdn.shopify.com/s/files/1/0432/8947/7273/files/87915536778.pdf
    • https://cdn.shopify.com/s/files/1/0430/8749/5321/files/54765088350.pdf
    • https://cdn.shopify.com/s/files/1/0430/0298/6659/files/ruteminazos.pdf
    • https://cdn.shopify.com/s/files/1/0430/8847/8359/files/96923651696.pdf
    • https://cdn.shopify.com/s/files/1/0432/4681/3346/files/sensory_evaluation_form.pdf
    • https://cdn.shopify.com/s/files/1/0427/8275/2935/files/nuregotoxulijubulojusutu.pdf
    • https://cdn.shopify.com/s/files/1/0430/0311/7721/files/31201208782.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_off0000798b.bin
26934dd29db0eee0b0d3b09ab2c01f5210b5da68a5c65bc0fe7c281d04f7e376
pdf-font-stream PDF embedded font (sfnt) at offset 0x798B 4928 bytes
font_01_sfnt_off00008a42.bin
afdf541b1de10478259ff8d1d681fdfe1e86bf278c20febeab7ab46576cb8620
pdf-font-stream PDF embedded font (sfnt) at offset 0x8A42 13892 bytes
font_02_sfnt_off0000b5c0.bin
05d2457133b820fa77aa358e30e9acfbad3f04c46ced9a37296d9311117db176
pdf-font-stream PDF embedded font (sfnt) at offset 0xB5C0 4324 bytes