Malicious PDF — malware analysis report

Static analysis result for SHA-256 206d662060e49130…

MALICIOUS

PDF

44.1 KB Created: 2020-08-31 17:25:45 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 0a8d29875545f51b1a4825ef35746a75 SHA-1: 043457bc02acd9beeb45b91697339ca47620b1ae SHA-256: 206d662060e4913016de96f61e6103114370ca1c956219c6be13792c96f35299
152 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1059.001 PowerShell

The PDF file contains a critical heuristic firing indicating a malicious redirector link. This link, 'https://ttraff.cc/wix?keyword=reported+speech+means', is likely the primary mechanism for delivering a malicious payload or directing users to a phishing page. The file also contains a large number of embedded links, many pointing to Shopify domains, which is characteristic of SEO link farms used to artificially inflate search engine rankings for malicious content. While no scripts were extracted, the presence of the malicious redirector and the link farm structure strongly suggests a malicious intent.

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/wix?keyword=reported+speech+means
    • https://cdn.shopify.com/s/files/1/0433/7264/2460/files/34243033584.pdf
    • https://cdn.shopify.com/s/files/1/0432/4245/5207/files/goulds_pathophysiology_free.pdf
    • https://cdn.shopify.com/s/files/1/0451/8959/5287/files/free_bypass_icloud_activation_tool.pdf
    • https://cdn.shopify.com/s/files/1/0440/1099/5862/files/gavonowovonukajudik.pdf
    • https://cdn.shopify.com/s/files/1/0437/6949/5713/files/wawapomazoxa.pdf
    • https://static.usrfiles.com/ugd/b8c837_003c288ff9d343b18038989854b6a8b5.pdf
    • https://static.usrfiles.com/ugd/b8c837_cbde0697eade453e89748eba8e4cc329.pdf
    • https://static.usrfiles.com/ugd/c0b427_08d242909cad461c88901e785f0f5a41.pdf
    • https://cdn.shopify.com/s/files/1/0459/7455/2743/files/44735117276.pdf
    • https://cdn.shopify.com/s/files/1/0465/0975/2478/files/xaxevulezuwonetowaxaxinu.pdf
    • https://cdn.shopify.com/s/files/1/0431/6764/5852/files/fakamazanexodawe.pdf
    • https://cdn.shopify.com/s/files/1/0428/2299/2028/files/african_history_books.pdf
    • https://cdn.shopify.com/s/files/1/0431/5450/5882/files/bedijodowajovijisuzezif.pdf
    • https://cdn.shopify.com/s/files/1/0432/0113/4754/files/ramepedemop.pdf
    • https://cdn.shopify.com/s/files/1/0430/5820/0725/files/26407640.pdf
    • https://cdn.shopify.com/s/files/1/0440/4330/5110/files/bengali_to_english_translation_passage.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_off00007153.bin
25ebd3fcdadee7c9548b3ef451b280bd78cd6a6c29260207881a476ba61cdd83		 pdf-font-stream PDF embedded font (sfnt) at offset 0x7153 5288 bytes
font_01_sfnt_off00008324.bin
673e1e7bc6fab30fadee572fcd389c3afccf20787e3eba9c2a1895fc5cbfb806		 pdf-font-stream PDF embedded font (sfnt) at offset 0x8324 9388 bytes

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