Malicious PDF — malware analysis report

Static analysis result for SHA-256 f03cc3ff26ed89e1…

MALICIOUS

PDF

29.8 KB Created: 2020-09-08 12:44:59 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: b8d41cbc5451429c246e06adea42e362 SHA-1: 5febc752b9e41b9bc2b074caaeb57a55d8342acd SHA-256: f03cc3ff26ed89e120a83b968b828371b7f06a5b57b300ceac8736807dea814c
150 Risk Score

Malware Insights

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

The PDF file was flagged as malicious by a machine learning classifier and contains a link farm of 18 PDF files hosted on Shopify. One of these links redirects to a known malicious domain (ttraff.cc), indicating a potential phishing or malware distribution attempt. The document body contains garbled text and a reference to the malicious URL, suggesting it's a 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.cc/wix?keyword=adivasi+dj+gana++video
    • https://cdn.shopify.com/s/files/1/0432/9200/0422/files/belababet.pdf
    • https://cdn.shopify.com/s/files/1/0437/7369/0017/files/58099590283.pdf
    • https://cdn.shopify.com/s/files/1/0437/4872/0789/files/84234924715.pdf
    • https://cdn.shopify.com/s/files/1/0433/7877/0078/files/dihybrid_punnett_square_answer_key.pdf
    • https://cdn.shopify.com/s/files/1/0466/3007/6581/files/mo_employer_s_tax_guide_2018.pdf
    • https://cdn.shopify.com/s/files/1/0432/2790/6206/files/13624204887.pdf
    • https://cdn.shopify.com/s/files/1/0427/8714/3839/files/91490493168.pdf
    • https://static.usrfiles.com/ugd/53cfc7_bdfb4ce743924db2a375ff201662a9b0.pdf
    • https://static.usrfiles.com/ugd/5a4aad_568a3615461b4dbe9636f213a2a147c4.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_off00003a8a.bin
f37c725ad9c086b7eb56417459c7753ba9dd098e4e5fd41e666771328d437917		 pdf-font-stream PDF embedded font (sfnt) at offset 0x3A8A 4992 bytes
font_01_sfnt_off00004ba3.bin
818678ef260ec29235f41493a9a45585bec995a87906a546531da218dbd50953		 pdf-font-stream PDF embedded font (sfnt) at offset 0x4BA3 9196 bytes

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