Malicious PDF — malware analysis report

Static analysis result for SHA-256 34f5c2d058766348…

MALICIOUS

PDF

49.0 KB Created: 2020-08-23 20:48:11 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 0bbfdeb359ce628a42cf95d707837116 SHA-1: b1d8decccec7f202f30457dcd5b9692f566a4b71 SHA-256: 34f5c2d058766348d793ce5f60cad36c7c1c0289bfadc32b180aa2ee5611acd1
152 Risk Score

Malware Insights

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

The PDF contains a critical heuristic firing for a malicious redirector link pointing to 'ttraff.com'. Additionally, it features a PDF link farm with numerous embedded URLs, many hosted on Shopify, suggesting an attempt to obscure the malicious destination. The ML classifier also strongly indicated maliciousness. No scripts were extracted, but the presence of a malicious redirector URL is sufficient to infer the attack pattern.

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.com/pify?keyword=arduino+bluetooth+controller+android+code
    • http://vumifobev.laurensgreenthumb.com/uploads/1/3/0/8/130873822/673904.pdf
    • http://gomelejir.optimizedcompounds.com/uploads/1/3/1/4/131453526/zusuxowasu-pedowunitusaget-lefik.pdf
    • http://files.wleconference.org/uploads/1/3/1/4/131407737/c75e1e03a03eac1.pdf
    • http://denemomu.rotboxrustorations.com/uploads/1/3/2/7/132740214/6140051.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/tedix.pdf
    • https://cdn.shopify.com/s/files/1/0432/6778/4864/files/49134082641.pdf
    • https://cdn.shopify.com/s/files/1/0434/1003/0748/files/kakibetegawojos.pdf
    • https://cdn.shopify.com/s/files/1/0431/2930/7293/files/le_brevet_d_invention.pdf
    • https://cdn.shopify.com/s/files/1/0434/9516/2022/files/25809528572.pdf
    • https://cdn.shopify.com/s/files/1/0427/7708/4070/files/3552057554.pdf
    • https://cdn.shopify.com/s/files/1/0433/7133/1734/files/91052149001.pdf
    • https://cdn.shopify.com/s/files/1/0430/4365/1741/files/41018775230.pdf
    • https://cdn.shopify.com/s/files/1/0435/6440/0798/files/60546751143.pdf
    • https://cdn.shopify.com/s/files/1/0434/0406/6983/files/kidurisadoruxejuv.pdf
    • https://cdn.shopify.com/s/files/1/0440/6624/2710/files/avernum_escape_from_the_pit_guide.pdf
    • https://cdn.shopify.com/s/files/1/0436/3137/8590/files/wabafuvazokalumatob.pdf
    • https://cdn.shopify.com/s/files/1/0432/7797/5717/files/2049562087.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://cdn.shopify.com/s/files/1/0434/1003/0748/files/kakibetegawojo

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000826e.bin
3e74188c7ebd141d5dd2e6d24948957fcd81ac3d42790370b63cdddf21cc4f58		 pdf-font-stream PDF embedded font (sfnt) at offset 0x826E 4976 bytes
font_01_sfnt_off00009344.bin
5ea9f1b18fd7500b848c8e2037d765e3efcc293b9ce363b1c12fb0bd2bdd2595		 pdf-font-stream PDF embedded font (sfnt) at offset 0x9344 10308 bytes

Open this report in the interactive analyzer, or submit your own file for analysis.