Malicious PDF — malware analysis report

Static analysis result for SHA-256 83b5c29f4afae081…

MALICIOUS

PDF

46.0 KB Created: 2020-07-31 18:28:46 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 6311f35a20ca1a3c0fd4bd926f9852aa SHA-1: 7e6b7831fb064dba412492538098bdccd486b9d5 SHA-256: 83b5c29f4afae0813e7743a1ae7e5496a0afe28734ba8ef63ca365706c81d84d
120 Risk Score

Malware Insights

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

The PDF file contains a large number of embedded links, many of which point to Shopify domains but are likely part of a link farm. One critical heuristic identified a link to a known malicious redirector at 'https://ttraff.cc/pify?keyword=get+featured+image+url'. This suggests the document's primary purpose is to redirect users to malicious infrastructure, potentially for phishing or malware distribution. No scripts were extracted, and the document body was heavily obfuscated.

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=get+featured+image+url
    • http://files.woofgangkennels.com/uploads/1/3/1/6/131637896/0621e795e0f4ba9.pdf
    • http://files.parlourpress.net/uploads/1/3/1/3/131379039/9678.pdf
    • http://files.cascadiahighspeedrail.com/uploads/1/3/2/6/132682802/7963841.pdf
    • http://files.goliadathleticboosters.com/uploads/1/3/1/8/131860938/9dfd82f4c01.pdf
    • https://cdn.shopify.com/s/files/1/0438/2385/7824/files/zimabemixeredifujum.pdf
    • https://cdn.shopify.com/s/files/1/0431/7236/4437/files/tajoborowisopuborijuwize.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/99839510681.pdf
    • https://cdn.shopify.com/s/files/1/0433/2083/6254/files/79811530328.pdf
    • https://cdn.shopify.com/s/files/1/0437/4996/5985/files/fulavuvoluko.pdf
    • https://cdn.shopify.com/s/files/1/0432/6454/0827/files/43365350290.pdf
    • https://cdn.shopify.com/s/files/1/0434/3873/5512/files/mizijaperupid.pdf
    • https://cdn.shopify.com/s/files/1/0430/2677/6227/files/rakuvotojoxazasero.pdf
    • https://cdn.shopify.com/s/files/1/0440/7027/3174/files/nakogev.pdf
    • https://cdn.shopify.com/s/files/1/0436/8403/6761/files/94262904138.pdf
    • https://cdn.shopify.com/s/files/1/0439/1727/9400/files/99987266714.pdf
    • https://cdn.shopify.com/s/files/1/0433/6563/0102/files/94144245825.pdf
    • https://cdn.shopify.com/s/files/1/0435/4323/2661/files/87893679546.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_off00006734.bin
5d34569239ce990c70c61484add3be13c065c0017f8f1bf7710273ed3aae9a2a
pdf-font-stream PDF embedded font (sfnt) at offset 0x6734 5080 bytes
font_01_sfnt_off0000786b.bin
d5e3f00487b17e470ced430904a8d72aa5401675e12e134820724f2f92cc0d5c
pdf-font-stream PDF embedded font (sfnt) at offset 0x786B 16228 bytes