Malicious PDF — malware analysis report

Static analysis result for SHA-256 e69196888d64f413…

MALICIOUS

PDF

53.3 KB Created: 2020-08-21 21:09:36 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: d339288055709d9c480f374a0e36602d SHA-1: dc44c32ed49f990fb07306edd3c539ff9285e152 SHA-256: e69196888d64f4138d1e001e2d8cd0fec2bcbd858534da3bad3c2240167f9343
152 Risk Score

Malware Insights

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

The PDF contains a large number of links to other PDF files, many hosted on Shopify. One of these links, 'https://ttraff.cc/pify?keyword=xenoblade+2+aux+cores+guide', redirects to known malicious infrastructure. This suggests a link farm designed to distribute malicious content or lead users to phishing sites. No scripts were extracted, and the document body was heavily obfuscated.

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

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.
  • Object number defined twice with different bodies info PDF_DUPLICATE_OBJ_BODY_INCREMENTAL
    The same indirect object (N G) is defined more than once with different body bytes. First-wins and last-wins readers will resolve different content, which is a parser-confusion shape used by targeted PDFs. Body-only differences are common in benign incremental updates, so severity is raised only when the duplicate carries active content.
  • 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=xenoblade+2+aux+cores+guide
    • http://files.castlehillfrenchies.com/uploads/1/3/1/3/131384589/melivu.pdf
    • http://files.lvsmn.com/uploads/1/3/1/3/131398102/jigofik-ludajigezera.pdf
    • https://cdn.shopify.com/s/files/1/0440/5598/6326/files/76440793342.pdf
    • https://cdn.shopify.com/s/files/1/0428/0313/4627/files/wikirova.pdf
    • https://cdn.shopify.com/s/files/1/0430/5272/8474/files/sojinovasedikirejepanafo.pdf
    • https://cdn.shopify.com/s/files/1/0429/6019/1651/files/78159311808.pdf
    • https://cdn.shopify.com/s/files/1/0435/7075/7791/files/40278888059.pdf
    • https://cdn.shopify.com/s/files/1/0437/4872/0789/files/tiroropoxezinad.pdf
    • https://cdn.shopify.com/s/files/1/0436/9544/0040/files/50566367325.pdf
    • https://cdn.shopify.com/s/files/1/0427/3831/9527/files/24897683452.pdf
    • https://cdn.shopify.com/s/files/1/0450/7946/2040/files/consumer_buying_behaviour_of_jewellery.pdf
    • https://cdn.shopify.com/s/files/1/0431/0846/6845/files/reged.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_off00008885.bin
b90b109c34db9b2d961be312c0c64f13ba4f5af9c83d6ae4556a72cb7f468167
pdf-font-stream PDF embedded font (sfnt) at offset 0x8885 2880 bytes
font_01_sfnt_off000092c3.bin
3c1142cc0797f12acace28630bc7b70eeaf348f7ab2f47883c3110b45c9456dc
pdf-font-stream PDF embedded font (sfnt) at offset 0x92C3 5424 bytes
font_02_sfnt_off0000a53d.bin
cdc675a5bf4f5caf3226a160bef0fbc9254ec6eced9f4583bd551215127665f3
pdf-font-stream PDF embedded font (sfnt) at offset 0xA53D 10256 bytes