Malicious PDF — malware analysis report

Static analysis result for SHA-256 77adc4f72787ec48…

MALICIOUS

PDF

41.1 KB Created: 2020-08-10 05:12:36 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 2d004d362e7f7dbf6d11c2ad95a6f825 SHA-1: c7d823355a66efa139a21f969a84c677d770a806 SHA-256: 77adc4f72787ec48652a1414300b18c437cf969b45e11fb368f4ef59f98c0ce2
194 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

This PDF document exhibits characteristics of an advance-fee scam, using a lure related to event programs or schedules to entice users to click malicious links. The document contains a high density of links, many pointing to potentially malicious redirectors, and is flagged by ML classifiers as malicious. The primary malicious URL identified is https://ttraff.cc/pify?keyword=programma+carnevale+acireale+2020+pdf, which is likely used to redirect users to further malicious content.

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

Heuristics 5

  • 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.
  • Advance-fee lottery/parcel scam lure high SE_ADVANCE_FEE_SCAM_LURE
    Document contains lottery/beneficiary or prize language together with large-value draft/funds wording and parcel/courier delivery requirements. This is a classic advance-fee fraud document shape.
  • 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/pify?keyword=programma+carnevale+acireale+2020+pdf
    • http://files.starcraftpontoons.com/uploads/1/3/2/6/132696048/wekir.pdf
    • http://files.fineartsacademybelmont.com/uploads/1/3/1/0/131070212/takofabus-gatalanis.pdf
    • http://xopifiw.avanvive.com/uploads/1/3/2/7/132710780/b130119ac2a03.pdf
    • http://files.artistbrittneyg.com/uploads/1/3/1/4/131437889/japimibazi.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://cdn.shopify.com/s/files/1/0432/5185/9611/files/perimeter_of_2d_shapes_worksheet.pdf
    • https://cdn.shopify.com/s/files/1/0431/9140/2660/files/mowude.pdf
    • https://cdn.shopify.com/s/files/1/0428/9688/3868/files/cards_against_humanity_disney.pdf
    • https://cdn.shopify.com/s/files/1/0429/9787/4851/files/tinkle_comics_free_download.pdf
    • https://cdn.shopify.com/s/files/1/0436/0732/6882/files/77152122424.pdf
    • https://cdn.shopify.com/s/files/1/0437/3735/0293/files/55707101487.pdf
    • https://cdn.shopify.com/s/files/1/0433/0396/0731/files/editing_documents_in_word_2020.pdf
    • https://cdn.shopify.com/s/files/1/0432/8793/7179/files/fexapetupazeli.pdf
    • https://cdn.shopify.com/s/files/1/0427/9785/8972/files/27575095159.pdf
    • https://cdn.shopify.com/s/files/1/0432/5864/2595/files/86891835728.pdf
    • https://cdn.shopify.com/s/files/1/0431/0161/8327/files/behavioural_finance_prasanna_chandra.pdf
    • https://cdn.shopify.com/s/files/1/0436/1430/6467/files/patterns_of_enterprise_application_architecture_download.pdf
    • https://cdn.shopify.com/s/files/1/0438/6645/6224/files/zunatun.pdf
    • https://cdn.shopify.com/s/files/1/0436/3298/4222/files/75085903334.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_off000061f8.bin
1334fc4446b248ea3a3af601e854e0ccaf290f226c676d15c432ed56142d8cad		 pdf-font-stream PDF embedded font (sfnt) at offset 0x61F8 5632 bytes
font_01_sfnt_off00007516.bin
3fbe6c4ee26f45bb5c5de65ad6f25a5ab5abf3952cefe6b29d04a737b61c53af		 pdf-font-stream PDF embedded font (sfnt) at offset 0x7516 10028 bytes

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