Malicious PDF — malware analysis report

Static analysis result for SHA-256 7a4464109066f3b8…

MALICIOUS

PDF

58.2 KB Created: 2020-08-30 12:00:44 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: b8217e250d4610f5c45102b8cd31aaf2 SHA-1: afdad8a28cc79d7bce435ece4d2dd7d8b92ee488 SHA-256: 7a4464109066f3b84777805e69abbd19b1b8a9c4584177b815a36bfddb14bfb7
154 Risk Score

Malware Insights

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

The PDF contains a link to a known malicious redirector, ttraff.cc, which is likely intended to lead the user to a phishing or malware distribution site. The PDF also contains a large number of links to Shopify-hosted PDFs, suggesting a link farm or SEO manipulation tactic. While no scripts were directly extracted, the presence of embedded URLs and the malicious redirector strongly indicate a phishing or malicious content delivery attempt.

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=seven+planes+of+existence
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • http://www.daltonmaag.com/
    • https://cdn.shopify.com/s/files/1/0432/8062/9913/files/brahma_songs_kannada.pdf
    • https://cdn.shopify.com/s/files/1/0431/5742/2229/files/convert_to_mov.pdf
    • https://cdn.shopify.com/s/files/1/0430/4922/2298/files/cortical_blindness.pdf
    • https://cdn.shopify.com/s/files/1/0464/9884/0744/files/rezinasiregelimago.pdf
    • https://cdn.shopify.com/s/files/1/0465/9511/3125/files/56549058559.pdf
    • https://cdn.shopify.com/s/files/1/0432/6578/6006/files/62096624960.pdf
    • https://static.usrfiles.com/ugd/b8c837_db3253c0efc7482b895a918465f5b309.pdf
    • https://static.usrfiles.com/ugd/c5d40f_81f104adbd8645e09912120527706275.pdf
    • https://static.usrfiles.com/ugd/b8c837_0827ac60d8f445adb3d7860bebf65dfd.pdf
    • https://cdn.shopify.com/s/files/1/0431/6404/1365/files/kaplan_ged_2015.pdf
    • https://cdn.shopify.com/s/files/1/0434/0305/1171/files/ximelodafawepili.pdf
    • https://cdn.shopify.com/s/files/1/0429/3813/8783/files/collar_x_malice_mineo_guide.pdf
    • https://cdn.shopify.com/s/files/1/0433/0684/4315/files/16988641845.pdf
    • https://cdn.shopify.com/s/files/1/0434/3722/8188/files/blood_groups_and_diet.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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off000099b3.bin
792f6ccc3deecba4af50bc431ed50158702c6f54dcb9215b73597e1fef02b775		 pdf-font-stream PDF embedded font (sfnt) at offset 0x99B3 4932 bytes
font_01_sfnt_off0000aa89.bin
0a767a50c573f15315a3e7f7abe43bd9733fa7a27bec38ca4e7ffcc7254ff683		 pdf-font-stream PDF embedded font (sfnt) at offset 0xAA89 10344 bytes
font_02_sfnt_off0000cd99.bin
d1f4a20f0e35a0564be54678b929bb8c711862c507f070c2b9a6abea8daf4378		 pdf-font-stream PDF embedded font (sfnt) at offset 0xCD99 4324 bytes

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