Malicious PDF — malware analysis report

Static analysis result for SHA-256 2e927182b909d823…

MALICIOUS

PDF

41.9 KB Created: 2020-08-22 15:54:23 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: e99c8279b1143d73ace854335a57e01c SHA-1: 387cdf6508614ab24e5820f9ab604ebdf6cc6144 SHA-256: 2e927182b909d823f0dbbdfba5b16bc75f31d9e97eed119e238fa460128f7458
154 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1204.002 Malicious Link

The PDF contains a mass external link farm, with a primary link pointing to a malicious redirector. The document body, though heavily obfuscated, contains the URL 'https://ttraff.cc/pify?keyword=imdb+boss+baby+parents+guide', which is identified as a malicious redirector. This suggests the document's purpose is to trick users into clicking the link, likely leading to further malicious content or downloads.

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/pify?keyword=imdb+boss+baby+parents+guide
    • http://files.karrathacaravanpark.com.au/uploads/1/3/0/9/130969364/d149b0.pdf
    • http://files.agenkastam.com/uploads/1/3/1/4/131407080/bokiwuzagatebez-nuvolibajez-zexeje-banibojomor.pdf
    • http://files.whsmusic.net/uploads/1/3/0/7/130739155/359e0046c1e1.pdf
    • https://cdn.shopify.com/s/files/1/0433/3741/6869/files/daxupefamojujefoji.pdf
    • https://cdn.shopify.com/s/files/1/0433/9941/3910/files/wubok.pdf
    • https://cdn.shopify.com/s/files/1/0428/1742/1479/files/livididuwatam.pdf
    • https://cdn.shopify.com/s/files/1/0431/5774/9917/files/93304162680.pdf
    • https://cdn.shopify.com/s/files/1/0435/9772/5864/files/33045897758.pdf
    • https://cdn.shopify.com/s/files/1/0427/5381/8790/files/alter_ego_a1_hachette_cahier_d_exercices_hachette.pdf
    • https://cdn.shopify.com/s/files/1/0438/4784/4000/files/como_beber_agua_de_mar_mariano_arnal.pdf
    • https://cdn.shopify.com/s/files/1/0431/0538/6657/files/39017737778.pdf
    • https://cdn.shopify.com/s/files/1/0430/7222/5442/files/adding_and_subtracting_polynomials_matching_activity.pdf
    • https://cdn.shopify.com/s/files/1/0462/4380/7392/files/gipotilidulejifumasuris.pdf
    • https://cdn.shopify.com/s/files/1/0428/9282/0643/files/1463144679.pdf
    • https://cdn.shopify.com/s/files/1/0432/4219/3058/files/kimebo.pdf
    • https://cdn.shopify.com/s/files/1/0438/5538/0630/files/walikonoranotesove.pdf
    • https://cdn.shopify.com/s/files/1/0429/7146/3831/files/warframe_best_kubrow.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/

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off000064d0.bin
af3896df36fed311288d169795d81a00bd6e80630188e89b4c657ac855f89553		 pdf-font-stream PDF embedded font (sfnt) at offset 0x64D0 5424 bytes
font_01_sfnt_off0000772a.bin
39c602e5879be7311aa9f5367117c99d96b380bc09e28f0ef8f97c55fa712a58		 pdf-font-stream PDF embedded font (sfnt) at offset 0x772A 10420 bytes

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