Malicious PDF — malware analysis report

Static analysis result for SHA-256 154ac1a98b552e73…

MALICIOUS

PDF

121.9 KB Created: 2020-09-05 05:00:03 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 9a0b8b0ab73ebe99feda8a2ff2b977dd SHA-1: a704cbe7e3ea87dbfe41301dd4159d983b7c8960 SHA-256: 154ac1a98b552e7352d843635ce85ff782353f4e2c59f0871a55cd76b499de56
154 Risk Score

Malware Insights

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

The PDF contains embedded links, one of which, 'https://ttraff.me/pify?keyword=lok+sabha+election+result+2019+list+pdf', is flagged as a malicious redirector. The document body, though heavily obfuscated, appears to contain text related to election results, suggesting a lure to entice users to click the malicious link. The presence of numerous other PDF links, many hosted on Shopify, indicates a potential link farm or SEO manipulation tactic to distribute the 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.me/pify?keyword=lok+sabha+election+result+2019+list+pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/pobilimej.pdf
    • https://cdn.shopify.com/s/files/1/0428/9318/1095/files/benim_hocam_kpss_matematik_konu_anlatm.pdf
    • https://cdn.shopify.com/s/files/1/0434/6265/6152/files/common_abbreviations_and_acronyms.pdf
    • https://cdn.shopify.com/s/files/1/0431/0728/7207/files/segezorawexisuvamiker.pdf
    • https://cdn.shopify.com/s/files/1/0456/4549/6487/files/21996305011.pdf
    • https://cdn.shopify.com/s/files/1/0432/4117/7252/files/valvoline_max_life_10w30.pdf
    • https://cdn.shopify.com/s/files/1/0430/7710/7865/files/litudiredagiwumukufubeva.pdf
    • https://cdn.shopify.com/s/files/1/0433/4705/0661/files/aashiqui_mein_teri_new_song_ringtone.pdf
    • https://static.usrfiles.com/ugd/ceb2e8_e6fdcf42ec524b7b98ac6ecacabc9085.pdf
    • https://static.usrfiles.com/ugd/9a242c_907c42116ebf4ff6a1476df57f619b9f.pdf
    • https://cdn.shopify.com/s/files/1/0428/2286/0966/files/mokedologexigudogudaguw.pdf
    • https://cdn.shopify.com/s/files/1/0430/7543/6698/files/953be8fc5154015699eb6c9b08748c6c.pdf
    • https://cdn.shopify.com/s/files/1/0435/6158/2755/files/75293802070.pdf
    • https://cdn.shopify.com/s/files/1/0441/0369/6536/files/artist_management_manual.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_off00019702.bin
c7cc8dd2df0c88572ee265f83f98d9a6f44b031bf1610ff2f7e98270e4c2fedc		 pdf-font-stream PDF embedded font (sfnt) at offset 0x19702 5868 bytes
font_01_sfnt_off0001aaf5.bin
06c912805342dfd47c3b8665030265e7a1c4105c9ea16d58f184b7cf962dfc25		 pdf-font-stream PDF embedded font (sfnt) at offset 0x1AAF5 15224 bytes

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