Malicious PDF — malware analysis report

Static analysis result for SHA-256 a1764700c0c9056d…

MALICIOUS

PDF

40.3 KB Created: 2020-08-08 03:10:24 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: b39421f5616544678755704173335271 SHA-1: 161297eefe538042949edc73aa4d89609735f9b3 SHA-256: a1764700c0c9056d4af0ca6e4c92aa37c0f027e029e37a5ad3ddf093363a7e58
150 Risk Score

Malware Insights

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

The PDF document was flagged as malicious by a machine learning classifier and contains numerous embedded links. One critical heuristic identified a malicious redirector link pointing to 'ttraff.com', suggesting a phishing or malware distribution attempt. Another heuristic detected a large PDF link farm, with many links hosted on 'cdn.shopify.com', likely used to distribute the malicious PDF or related content. The document body contains garbled text but includes the malicious URL, indicating it's part of the lure.

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.com/pify?keyword=file+pdf+adalah
    • http://gejapa.pluckersworld.com/uploads/1/3/1/3/131379803/2bc060722b1bd.pdf
    • http://files.victoriavisions.com/uploads/1/3/0/9/130969918/1709199.pdf
    • http://files.worklifespanish.com/uploads/1/3/1/3/131398440/2ea150a42a2.pdf
    • https://cdn.shopify.com/s/files/1/0430/7219/2669/files/77303885762.pdf
    • https://cdn.shopify.com/s/files/1/0433/2974/9145/files/combine_files_linux.pdf
    • https://cdn.shopify.com/s/files/1/0430/3428/0087/files/45471326056.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/dusegu.pdf
    • https://cdn.shopify.com/s/files/1/0428/6572/1503/files/55503817053.pdf
    • https://cdn.shopify.com/s/files/1/0435/9543/2099/files/john_deere_1010_manual_free_download.pdf
    • https://cdn.shopify.com/s/files/1/0428/9635/9580/files/ladunukajigu.pdf
    • https://cdn.shopify.com/s/files/1/0440/1060/2661/files/kiwizufazaz.pdf
    • https://cdn.shopify.com/s/files/1/0431/4647/7725/files/firokafexudi.pdf
    • https://cdn.shopify.com/s/files/1/0434/1327/4780/files/tro_chemistry_solutions_manual.pdf
    • https://cdn.shopify.com/s/files/1/0430/6921/0773/files/74184281950.pdf
    • https://cdn.shopify.com/s/files/1/0438/1566/5826/files/bujemuvagalepise.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_off000061dc.bin
1a73afd02cac28a067b464ce5bc8a9587c3b5901fa1361fa159c731dd7490690		 pdf-font-stream PDF embedded font (sfnt) at offset 0x61DC 4812 bytes
font_01_sfnt_off00007241.bin
a75c0b98d5911871813693e8348d6498521eb64d66a377e8164dad06cbdf30e3		 pdf-font-stream PDF embedded font (sfnt) at offset 0x7241 10084 bytes

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