Malicious PDF — malware analysis report

Static analysis result for SHA-256 128e95468a6a690b…

MALICIOUS

PDF

43.5 KB Created: 2020-09-01 00:07:39 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: ff8194eb0729766ed7ccf20b40ca523f SHA-1: 11aa2c6b5e3e666265b18fb922a3469eee69f0f0 SHA-256: 128e95468a6a690ba0996d1bc38e878cc9101e9ae1a5849a43d924a7db2a32d2
162 Risk Score

Malware Insights

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

The PDF contains numerous embedded links, with a critical heuristic firing for PDF_MALICIOUS_REDIRECTOR_LINK pointing to `https://ttraff.cc/wix?keyword=cake+mania+main+street+mod+apk`. This suggests the document is designed to redirect users to malicious content, likely for phishing or malware distribution. The presence of a 'download button' heuristic further supports a lure-based attack pattern.

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

Heuristics 5

  • 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.
  • Visual download / call-to-action button lure low SE_DOWNLOAD_BUTTON
    Document contains a call-to-action phrase ('Click here to download', 'Download Now', etc.) — low-signal unless other findings point to a malicious workflow
  • 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=cake+mania+main+street+mod+apk
    • http://picfs.com/1bid80Neon
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://cdn.shopify.com/s/files/1/0429/0609/1673/files/taraveniba.pdf
    • https://cdn.shopify.com/s/files/1/0428/5143/4659/files/63010100326.pdf
    • https://cdn.shopify.com/s/files/1/0431/5480/0796/files/59562342520.pdf
    • https://cdn.shopify.com/s/files/1/0429/7841/0655/files/gotitoxubejavopivo.pdf
    • https://cdn.shopify.com/s/files/1/0431/8432/4770/files/39735880673.pdf
    • https://static.usrfiles.com/ugd/4cf28d_4ba7a666442542269c2754b0fc30c612.pdf
    • https://static.usrfiles.com/ugd/eaf48f_c65480855d644eca9b61381ec77cb53a.pdf
    • https://cdn.shopify.com/s/files/1/0438/5649/4757/files/37678691155.pdf
    • https://cdn.shopify.com/s/files/1/0431/0653/3525/files/55123891328.pdf
    • https://cdn.shopify.com/s/files/1/0437/4603/3818/files/hemorrhoids_guidelines_uk.pdf
    • https://cdn.shopify.com/s/files/1/0427/9592/5671/files/56572229427.pdf
    • https://cdn.shopify.com/s/files/1/0428/7502/7619/files/tudin.pdf
    • https://cdn.shopify.com/s/files/1/0431/1141/5974/files/65683755154.pdf
    • https://cdn.shopify.com/s/files/1/0430/8077/7882/files/52777610402.pdf
    • https://cdn.shopify.com/s/files/1/0432/0195/3952/files/3204455254.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_off00006489.bin
10e1a8a6c2d826dd61c3b4eeec84e6e84fc6b4a8e3d3800b52e88666fa1ec7fa		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6489 5044 bytes
font_01_sfnt_off00007595.bin
cc37a58916ef91a634f9ef5f743412024506c5095e33fc5f62b261aa719904c5		 pdf-font-stream PDF embedded font (sfnt) at offset 0x7595 15512 bytes

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