Malicious PDF — malware analysis report

Static analysis result for SHA-256 00ef9ff34256e9ea…

MALICIOUS

PDF

41.0 KB Created: 2020-08-13 23:46:35 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 11a2ff90929f66cf5abb5b4f934be8f5 SHA-1: 4aca48c889014e19a4ad98410f34e027e9cf36e1 SHA-256: 00ef9ff34256e9eaef7a1ce7fb7c220edade5b82e6e2a6cbab792b6424904f67
162 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Phishing: Spearphishing Attachment T1204.002 Malicious Link T1059.001 Command and Scripting Interpreter: PowerShell

The PDF contains numerous links, including one pointing to a known malicious redirector, suggesting a phishing or malware distribution attempt. The document body, though partially corrupted, contains text related to 'eating disorder powerpoint template free' and the malicious URL, indicating a lure. The presence of a visual download button heuristic further supports the malicious intent.

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.
  • Visual download / call-to-action button lure low SE_DOWNLOAD_BUTTON
    Document contains a call-to-action phrase ('Click here to download', 'Download Now', etc.) — low-signal unless other findings point to a malicious workflow
  • 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.ru/pify?keyword=eating+disorder+powerpoint+template+free
    • http://poduv.crystalsgymnastics.org/uploads/1/3/0/8/130873995/3794328.pdf
    • http://vopez.wintersranch.com/uploads/1/3/1/3/131383657/rijipideminep_kezeweziremuper_dosexonomo.pdf
    • http://labafit.caringbyconnection.com/uploads/1/3/1/0/131070109/gewev.pdf
    • http://kesin.fnqtropicaldancefestival.com/uploads/1/3/0/8/130814328/2748138.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • http://www.daltonmaag.com/
    • https://cdn.shopify.com/s/files/1/0432/1814/1347/files/73398530606.pdf
    • https://cdn.shopify.com/s/files/1/0431/3740/0999/files/mikenota.pdf
    • https://cdn.shopify.com/s/files/1/0428/8099/1388/files/what_does_the_sims_3_generations_include.pdf
    • https://cdn.shopify.com/s/files/1/0432/4923/8178/files/our_ecological_footprint.pdf
    • https://cdn.shopify.com/s/files/1/0430/0200/3609/files/bososexakujujuzadufitul.pdf
    • https://cdn.shopify.com/s/files/1/0433/2270/4030/files/3565822702.pdf
    • https://cdn.shopify.com/s/files/1/0428/5795/5494/files/beginning_consonant_blends.pdf
    • https://cdn.shopify.com/s/files/1/0437/6346/6389/files/88185807647.pdf
    • https://cdn.shopify.com/s/files/1/0431/2412/9952/files/94743748908.pdf
    • https://cdn.shopify.com/s/files/1/0428/6627/8556/files/33258690288.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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00005495.bin
a6a0024768cf6d2e68598153dcd0aef5c8546f674d1d7532c597518de052f387		 pdf-font-stream PDF embedded font (sfnt) at offset 0x5495 5200 bytes
font_01_sfnt_off0000663e.bin
8faf83f501990129ca45c26d019dcafe9cc4a1f0561de7343aeed5c647f6463a		 pdf-font-stream PDF embedded font (sfnt) at offset 0x663E 10128 bytes
font_02_sfnt_off000088f3.bin
ff5f0ef16caf3e97cd1984b3a03ea88e11eab8cf63d2ee006085a4b9995833f3		 pdf-font-stream PDF embedded font (sfnt) at offset 0x88F3 4324 bytes

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