Malicious PDF — malware analysis report

Static analysis result for SHA-256 6f3f7371a39f49d7…

MALICIOUS

PDF

51.4 KB Created: 2020-08-25 16:12:58 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 5fda681d365b5fc1b9e6d4ce600a7887 SHA-1: 644ccf8b9ace0832e6eb67bd00db1706893fb455 SHA-256: 6f3f7371a39f49d7e79b35e3085b628ab10db9512a1bc9af9665526947696a8c
154 Risk Score

Malware Insights

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

The PDF contains a link farm and a critical redirector link to ttraff.com, indicating a phishing or scam attempt. The document body, though partially corrupted, contains text related to a report and the malicious URL, suggesting the intent is to trick the user into clicking the link. No scripts were extracted, but the presence of embedded URLs and the redirector heuristic strongly suggest malicious intent.

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.com/pify?keyword=ghana+millennium+development+goals+report+2015
    • http://files.pearldeangarden.com/uploads/1/3/1/8/131857421/gorow.pdf
    • http://newara.rhinopartyrentals.com/uploads/1/3/1/8/131871622/vewufofawemiro_nezusa_nozijidokelan_nitofetogi.pdf
    • http://files.weldcountymeatgoats.com/uploads/1/3/2/6/132681576/sirafakigexisav.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • http://www.daltonmaag.com/
    • https://cdn.shopify.com/s/files/1/0437/6988/8920/files/acupressure_potent_points.pdf
    • https://cdn.shopify.com/s/files/1/0433/7382/2115/files/95747519868.pdf
    • https://cdn.shopify.com/s/files/1/0435/3723/6119/files/fasting_bible_study.pdf
    • https://cdn.shopify.com/s/files/1/0432/6365/6099/files/72119905282.pdf
    • https://cdn.shopify.com/s/files/1/0432/3577/0535/files/bifijulozul.pdf
    • https://cdn.shopify.com/s/files/1/0429/1140/0102/files/pueblo_de_puerto_rico_orden_alfabetico.pdf
    • https://cdn.shopify.com/s/files/1/0438/1576/4128/files/zalorop.pdf
    • https://cdn.shopify.com/s/files/1/0433/3728/5797/files/bollywood_actress_images.pdf
    • https://cdn.shopify.com/s/files/1/0459/1285/0581/files/foliage_report_2018_new_york.pdf
    • https://cdn.shopify.com/s/files/1/0437/6687/4266/files/tazurebive.pdf
    • https://cdn.shopify.com/s/files/1/0464/3337/0264/files/durable_medical_power_of_attorney_form_illinois.pdf
    • https://cdn.shopify.com/s/files/1/0460/2514/6527/files/cancer_biology_book.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_off00007b30.bin
26c2a0fca69b355fb4455af8203cd6b49e01fe40d9ae00e963893baa25226d36		 pdf-font-stream PDF embedded font (sfnt) at offset 0x7B30 5796 bytes
font_01_sfnt_off00008ec2.bin
35e3cba4e239fd43022bc1ec22d0d3655ed25b2100cced1c30159fb47888fe9e		 pdf-font-stream PDF embedded font (sfnt) at offset 0x8EC2 10388 bytes
font_02_sfnt_off0000b262.bin
9f355172d696dda274cac500966718f112ce76951f19577ac4888987ea6471b2		 pdf-font-stream PDF embedded font (sfnt) at offset 0xB262 4324 bytes

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