Malicious PDF — malware analysis report

Static analysis result for SHA-256 6d54fb26a7074366…

MALICIOUS

PDF

46.8 KB Created: 2020-09-05 16:08:51 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 5ec449d1e20dafa8bb9f56144cd01af2 SHA-1: 5d5eeabec1eef46fedf2ad2a3f1a7cb72d2e3104 SHA-256: 6d54fb26a707436643196d2e640b56fa95f4b8a655a8faa583032f0b8bc88e56
154 Risk Score

Malware Insights

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

The PDF contains a large number of embedded links, with one identified as a malicious redirector. The document body, though heavily obfuscated, contains text related to 'anchoring and adjustment heuristic pdf' and includes the malicious redirector URL. The presence of numerous links suggests an attempt to lure users to malicious sites, potentially for phishing or malware distribution.

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.link/wix?keyword=anchoring+and+adjustment+heuristic+pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://cdn.shopify.com/s/files/1/0463/0410/0514/files/pixel_platformer_games_android.pdf
    • https://cdn.shopify.com/s/files/1/0460/4087/5172/files/toshiba_ps_261_manuais.pdf
    • https://cdn.shopify.com/s/files/1/0428/9318/1095/files/miopia_e_atropina.pdf
    • https://cdn.shopify.com/s/files/1/0437/7460/7514/files/subutoregawaxezamefarejes.pdf
    • https://cdn.shopify.com/s/files/1/0430/9159/1321/files/fepijuvatanu.pdf
    • https://cdn.shopify.com/s/files/1/0432/6942/3269/files/61872538873.pdf
    • https://cdn.shopify.com/s/files/1/0435/9713/6030/files/awash_river_basin.pdf
    • https://cdn.shopify.com/s/files/1/0429/5373/6351/files/shiva_cartoon_video_v-_s_mobi.pdf
    • https://cdn.shopify.com/s/files/1/0431/5044/2660/files/calcium_carbonate_omya.pdf
    • https://cdn.shopify.com/s/files/1/0433/3430/3912/files/24793405855.pdf
    • https://cdn.shopify.com/s/files/1/0438/2654/4802/files/resume_cover_letter_template_word_document.pdf
    • https://cdn.shopify.com/s/files/1/0430/3349/3658/files/463298507.pdf
    • https://cdn.shopify.com/s/files/1/0435/2658/6520/files/ai_deep_learning_and_machine_learning_a_primer.pdf
    • https://cdn.shopify.com/s/files/1/0432/4098/0647/files/48075615830.pdf
    • https://static.usrfiles.com/ugd/82e28d_5b6da09182b14994a5f63f2ca7966b2c.pdf
    • https://static.usrfiles.com/ugd/a44510_cfb0a59093bb41f1815c3dd1d5c47642.pdf
    • https://static.usrfiles.com/ugd/b8c837_5ebc31fccf7147f5b53ae8a6e3b817d9.pdf
    • https://static.usrfiles.com/ugd/191a6d_b5ac4bed826b4f31b15b348b43c06c1e.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_off00007695.bin
f22b5591483bb66f09fe2b5830723eb83032d047e7f2a368cbc4c1f977412544		 pdf-font-stream PDF embedded font (sfnt) at offset 0x7695 5600 bytes
font_01_sfnt_off0000897f.bin
7c1c2604ef4f9324a86db2960db4f68dcdd6138ef9af95fd17bc83c2e2d9dea3		 pdf-font-stream PDF embedded font (sfnt) at offset 0x897F 10548 bytes

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