Malicious PDF — malware analysis report

Static analysis result for SHA-256 d93f1034ada5df4b…

MALICIOUS

PDF

46.9 KB Created: 2020-09-05 23:01:31 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: a0fe893b31b4553c948d44e3d3544159 SHA-1: 9ff703fe17d548ddb9b3492a4d840f5ae627964b SHA-256: d93f1034ada5df4b8d9ff353adeebdd6cacf05bcfa890f2e0d4b8404716559b4
150 Risk Score

Malware Insights

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

The PDF was flagged as malicious by a classifier and contains a link to a known malicious redirector. It also exhibits characteristics of a PDF link farm, with numerous embedded links. The primary malicious URL identified is https://ttraff.club/pify?keyword=letter+writing+format+in+english+for+tc, which likely serves as a lure or initial stage for further malicious activity.

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

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.club/pify?keyword=letter+writing+format+in+english+for+tc
    • https://cdn.shopify.com/s/files/1/0429/6556/5589/files/90131452186.pdf
    • https://cdn.shopify.com/s/files/1/0432/2312/2084/files/que_significa_concavo.pdf
    • https://cdn.shopify.com/s/files/1/0428/7863/2095/files/41320082886.pdf
    • https://cdn.shopify.com/s/files/1/0431/7465/8216/files/7484271788.pdf
    • https://static.usrfiles.com/ugd/18f527_aab3550037424b9087f4f24276494c69.pdf
    • https://cdn.shopify.com/s/files/1/0462/7644/4320/files/45043024747.pdf
    • https://cdn.shopify.com/s/files/1/0431/3792/5269/files/kerutipexunavuma.pdf
    • https://cdn.shopify.com/s/files/1/0428/7676/4327/files/88974685695.pdf
    • https://static.usrfiles.com/ugd/86319b_808c6fe5f82247439da02674151b4967.pdf
    • https://static.usrfiles.com/ugd/1d64af_655464b986f04297a64aabbc32872479.pdf
    • https://static.usrfiles.com/ugd/b8c837_ecb7db2ebfd14b9392d61fde998c4381.pdf
    • https://static.usrfiles.com/ugd/b8c837_e46242ac61bd457ca672770fdf54dfaf.pdf
    • https://static.usrfiles.com/ugd/7c3584_68cc5f28fc21403585d86c67bf8a0eaa.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/
    • https://static.usrfiles.com/ugd/18f527_aab3550037424b9087f4f24276494

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00006c5f.bin
b862f318675325db3b930ab6c7d71f222afe52af2f37ce41a88b1062d0755c33		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6C5F 5116 bytes
font_01_sfnt_off00007da3.bin
bcea1db9d1f14c454c393a55934451823191529a164b6a0405d86decbb526b9b		 pdf-font-stream PDF embedded font (sfnt) at offset 0x7DA3 10236 bytes
font_02_sfnt_off0000a05f.bin
05d2457133b820fa77aa358e30e9acfbad3f04c46ced9a37296d9311117db176		 pdf-font-stream PDF embedded font (sfnt) at offset 0xA05F 4324 bytes

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