Malicious PDF — malware analysis report

Static analysis result for SHA-256 1411fcc1084da7c7…

MALICIOUS

PDF

56.5 KB Created: 2020-08-03 12:14:03 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 74f28752a3da1f909ca2488e5b3947a6 SHA-1: cfbb467d2a0125bec76f83bf566669e6766012fe SHA-256: 1411fcc1084da7c78d4a4cbcfbbdad3c7ad46d5c8c4fa1059eab6b4cc8cc9eb0
154 Risk Score

Malware Insights

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

The PDF contains a critical heuristic firing for linking to known malicious redirector infrastructure, specifically the URL https://ttraff.com/pify?keyword=timelessness+and+the+reality+of+fate+by+harun+yahya+pdf. This URL is presented within the document body, disguised as a book title, suggesting a social engineering tactic to trick users into clicking. The presence of numerous other PDF links, many pointing to Shopify domains, indicates a potential link farm or SEO manipulation strategy to obscure the malicious destination. The ML classifier also strongly flagged this PDF as malicious.

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=timelessness+and+the+reality+of+fate+by+harun+yahya+pdf
    • http://files.totallyrendang.com/uploads/1/3/1/3/131383743/a45309e1.pdf
    • http://files.jimenavalenzuela.com/uploads/1/3/1/4/131453735/077a81fcc.pdf
    • http://pupibafu.jastravs.com/uploads/1/3/1/4/131437601/kovaxexuko.pdf
    • http://kesotavix.siglapircc.com/uploads/1/3/1/4/131437736/fesareriniketu-dumoludobegez-zaxetamawedim-wewuti.pdf
    • http://files.angeliquemichaudphotographie.com/uploads/1/3/2/7/132740186/0996dbced.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://cdn.shopify.com/s/files/1/0435/2750/4024/files/tavebazegabejofufulede.pdf
    • https://cdn.shopify.com/s/files/1/0429/2929/1427/files/68557070634.pdf
    • https://cdn.shopify.com/s/files/1/0430/2385/9873/files/97355606509.pdf
    • https://cdn.shopify.com/s/files/1/0429/6228/8793/files/pagunimoli.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/89647405972.pdf
    • https://cdn.shopify.com/s/files/1/0430/7448/6421/files/gebinolipatubufobev.pdf
    • https://cdn.shopify.com/s/files/1/0437/6120/5399/files/d_e1_bb_8ach.pdf
    • https://cdn.shopify.com/s/files/1/0430/7841/8583/files/wapujezi.pdf
    • https://cdn.shopify.com/s/files/1/0432/1801/0274/files/50093389075.pdf
    • https://cdn.shopify.com/s/files/1/0432/6113/2968/files/750439194.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://dejavu.sourceforge.net
    • http://dejavu.sourceforge.net/wiki/index.php/License
    • http://scripts.sil.org/OFL

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
stream_005_off0000b228.bin
d5b88f1d0c0d330630dae83f7770e528d758a1f6a959d3d1f87adb2c5f229051		 decompressed-pdf-stream PDF FlateDecoded stream at offset 0xB228 20404 bytes
font_00_sfnt_off00007ae8.bin
7c4227a03d0ba7f22bfb5297729d41c755cde1c8e466a1bf7caa6327b9629a52		 pdf-font-stream PDF embedded font (sfnt) at offset 0x7AE8 5472 bytes
font_01_sfnt_off00008d57.bin
3632f5c495cdb1e78bf60fc94b9eea3fc0190a7d5ac892db47b4d65d6d2a1ebf		 pdf-font-stream PDF embedded font (sfnt) at offset 0x8D57 10732 bytes

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