Malicious PDF — malware analysis report

Static analysis result for SHA-256 051c728538005a31…

MALICIOUS

PDF

42.8 KB Created: 2020-08-31 05:46:52 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 023eb792c61f923c57a5666fd264bec9 SHA-1: ec00fb13c48fe6f4cbf903da322e6a06c61a36a2 SHA-256: 051c728538005a310998a77fd7d924da98265430464ac788bd87498d03cf15cd
154 Risk Score

Malware Insights

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

This PDF file contains a link farm designed to redirect users to malicious infrastructure. The primary malicious URL identified is ttraff.cc, which is flagged as a known redirector. The document body, though heavily obfuscated, contains the same URL, suggesting it's the intended lure.

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=ge+profile+spectra+xl44+oven+manual
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://cdn.shopify.com/s/files/1/0429/9515/5105/files/cestino_android_samsung_j5.pdf
    • https://cdn.shopify.com/s/files/1/0437/6064/8343/files/chama_chama_song_free_mr_jatt.pdf
    • https://cdn.shopify.com/s/files/1/0443/0387/6252/files/dress_code_semi_formal_wedding.pdf
    • https://cdn.shopify.com/s/files/1/0429/8421/0583/files/16416437259.pdf
    • https://cdn.shopify.com/s/files/1/0441/2856/7448/files/cambridge_igcse_computer_studies_coursebook.pdf
    • https://cdn.shopify.com/s/files/1/0430/3178/9721/files/dakovezivemive.pdf
    • https://cdn.shopify.com/s/files/1/0437/5507/7786/files/buying_behaviour_of_customers.pdf
    • https://cdn.shopify.com/s/files/1/0431/2619/4342/files/tufuwejutimivok.pdf
    • https://static.usrfiles.com/ugd/b8c837_eaa94e4c6276449093256a3333fd4ab8.pdf
    • https://static.usrfiles.com/ugd/b8c837_4bd0d1aa19874c7d9cbbf58e5ae403fd.pdf
    • https://static.usrfiles.com/ugd/b8c837_aa2cf6b96ada42b1abdcefda0868898e.pdf
    • https://static.usrfiles.com/ugd/1a89c8_5fe224a58d0f4b55931beac3cb114ba5.pdf
    • https://cdn.shopify.com/s/files/1/0428/3580/4319/files/crazy_ex_girlfriend_sheet_music_season_2.pdf
    • https://cdn.shopify.com/s/files/1/0432/3858/8584/files/33940338411.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/xigorekotat.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_off0000678f.bin
cff091f870a53e84aa4cca10794541a28bb5076b084d5f8bddb5bd2c55899111
pdf-font-stream PDF embedded font (sfnt) at offset 0x678F 5408 bytes
font_01_sfnt_off000079ec.bin
840adc0382cff184b299247f07b45951c30be707c6830f8a729ce4ce0db62ece
pdf-font-stream PDF embedded font (sfnt) at offset 0x79EC 11004 bytes