Malicious PDF — malware analysis report

Static analysis result for SHA-256 1d3dc144c197e6e0…

MALICIOUS

PDF

46.6 KB Created: 2020-08-15 20:44:37 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: e33f33510876e0d9e5ad10a14016e8eb SHA-1: f32d04ca9d72b6c5f9a39dbd09996bc50c2ceba6 SHA-256: 1d3dc144c197e6e0f4383b4a2b29493976b8e3c6b8e7cdfc29b998137013bc24
154 Risk Score

Malware Insights

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

The PDF contains a link to a known malicious redirector, ttraff.com, which is likely used to obscure the final destination of the malicious payload. The document body and heuristics indicate a lure related to 'dls 18 hack profile data', suggesting a phishing or social engineering attempt. The PDF also hosts a large number of external links, many pointing to Shopify domains, which is characteristic of a link farm used to improve SEO for malicious sites.

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=dls+18+hack+profile+data
    • http://vogenexi.spanishflamencodance.com/uploads/1/3/2/8/132814930/punep-foxomapi.pdf
    • http://files.mildredlibrary.com/uploads/1/3/2/7/132740172/foxoxodipopize_xiporonuze_xuninorujabutun.pdf
    • http://dafotatuw.rosebayridge.com/uploads/1/3/2/6/132680869/getililiruzex_kajale_tamox_jalofaji.pdf
    • http://files.mlkswim.com/uploads/1/3/1/3/131383727/kevesetenaxiselep.pdf
    • http://files.maronianinsurance.com/uploads/1/3/0/7/130776088/mufak.pdf
    • https://cdn.shopify.com/s/files/1/0431/3186/3202/files/jikamurojenuf.pdf
    • https://cdn.shopify.com/s/files/1/0437/9072/9377/files/fagasob.pdf
    • https://cdn.shopify.com/s/files/1/0430/7157/0069/files/24525821531.pdf
    • https://cdn.shopify.com/s/files/1/0430/5335/1066/files/kaspersky_antivirus_2010_free_full_version.pdf
    • https://cdn.shopify.com/s/files/1/0428/9550/7615/files/pofuberijujorirevibuvilor.pdf
    • https://cdn.shopify.com/s/files/1/0432/8354/6267/files/30226607785.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/miveguxuxububepevomozit.pdf
    • https://cdn.shopify.com/s/files/1/0430/6694/9786/files/affidavit_format_for_date_of_birth.pdf
    • https://cdn.shopify.com/s/files/1/0428/1185/0918/files/loreduvowenara.pdf
    • https://cdn.shopify.com/s/files/1/0434/0246/1351/files/31867477381.pdf
    • https://cdn.shopify.com/s/files/1/0431/7695/1957/files/21744549396.pdf
    • https://cdn.shopify.com/s/files/1/0432/6568/7717/files/adverbs_of_frequency_exercises.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/1/0432/6568/7717/files/ad

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00006bf7.bin
792cd5b0322c03dadd52868c82c97957dede04b4884ca8e77e86193aaf178e32		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6BF7 5552 bytes
font_01_sfnt_off00007ecd.bin
3bbd3da661493a1c158cf97760b79e51112e33d4f9adbb06d0870738ce41f0a6		 pdf-font-stream PDF embedded font (sfnt) at offset 0x7ECD 14832 bytes

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