Malicious PDF — malware analysis report

Static analysis result for SHA-256 12e43a1d4cc4e084…

MALICIOUS

PDF

40.1 KB Created: 2020-08-02 12:41:56 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 2a6a1e4c78fb7c637fb0f97c61cf90a2 SHA-1: ce2ce32b41767a9d3ca6685bd4deb5918a938be4 SHA-256: 12e43a1d4cc4e0843ec531d8ac4b0a84d038b57c80d61726dfef9667fd0e2a1e
154 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1059.007 JavaScript

The PDF contains a link disguised as a manual, which is a common social engineering tactic to trick users into clicking. The primary link `https://ttraff.cc/pify?keyword=motorola+walkie+talkie+manual` is flagged as a malicious redirector. The document also hosts a large number of external PDF links, suggesting a link farm or SEO manipulation to distribute malicious content.

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/pify?keyword=motorola+walkie+talkie+manual
    • http://files.covid-logic.com/uploads/1/3/1/4/131406403/luxilipudakinul_sotizuwumomifu_tobide_givivowazesal.pdf
    • http://files.izkkpsi.org/uploads/1/3/0/9/130969681/8709921.pdf
    • http://files.danielmagill.co.uk/uploads/1/3/1/4/131409074/xavatol-saxikasuribifa.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://cdn.shopify.com/s/files/1/0431/1908/3677/files/gevaj.pdf
    • https://cdn.shopify.com/s/files/1/0433/0638/5573/files/ginirevepod.pdf
    • https://cdn.shopify.com/s/files/1/0434/4024/2840/files/disunirolojilom.pdf
    • https://cdn.shopify.com/s/files/1/0428/4514/3207/files/64450372689.pdf
    • https://cdn.shopify.com/s/files/1/0440/3236/0613/files/pasebuk.pdf
    • https://cdn.shopify.com/s/files/1/0434/3971/8552/files/66757707206.pdf
    • https://cdn.shopify.com/s/files/1/0431/4251/2802/files/4763447017.pdf
    • https://cdn.shopify.com/s/files/1/0435/2675/0362/files/39766537887.pdf
    • https://cdn.shopify.com/s/files/1/0438/8211/9323/files/meek_mill_wanna_know_drake_diss.pdf
    • https://cdn.shopify.com/s/files/1/0427/9740/0223/files/61788148543.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/
    • http://scripts.sil.org/OFL

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00006050.bin
14d4f97f0d8c0bd9e79f40a17f96e8cc5687e34a52335b9ab76ab70c164ee540
pdf-font-stream PDF embedded font (sfnt) at offset 0x6050 4816 bytes
font_01_sfnt_off000070b1.bin
89d1599e00edd0d44a2b65eb164b7df016482f18a69b6235278aaf78bab11cbf
pdf-font-stream PDF embedded font (sfnt) at offset 0x70B1 10344 bytes