Malicious PDF — malware analysis report

Static analysis result for SHA-256 6e268680bda571ef…

MALICIOUS

PDF

46.2 KB Created: 2020-08-25 02:07:25 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 2a786bf76ccdc91a753e59b8133a0a44 SHA-1: 13e67c6281415b36855ffc023a915a2dfb0a8ba6 SHA-256: 6e268680bda571eff60ab6824991de4f8cad765a6860cf58f714e4bc5e43f675
154 Risk Score

Malware Insights

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

The PDF contains a link to a redirector service, which is a common tactic for delivering malicious payloads or phishing pages. The document body, though heavily obfuscated, contains the URL 'https://ttraff.com/pify?keyword=hen+party+game+templates+free', suggesting a lure related to free templates. The heuristic 'PDF_MALICIOUS_REDIRECTOR_LINK' confirms the malicious nature of this URL. The presence of numerous other links, identified by 'PDF_SEO_LINK_FARM', further indicates a malicious intent to distribute harmful content.

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=hen+party+game+templates+free
    • http://files.dcgrandprix.org/uploads/1/3/1/8/131871518/lafofivojemid_jamevuzifes_legokeguku.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://cdn.shopify.com/s/files/1/0434/7622/2114/files/gikonefarewomitoduxeped.pdf
    • https://cdn.shopify.com/s/files/1/0434/6786/6278/files/dbrau_date_sheet_2019_sarkari_result.pdf
    • https://cdn.shopify.com/s/files/1/0435/2134/3647/files/ben_10_alien_force_emuparadise.pdf
    • https://cdn.shopify.com/s/files/1/0431/9382/7485/files/stihl_ms290_manual.pdf
    • https://cdn.shopify.com/s/files/1/0433/8037/5708/files/building_construction_worksheets.pdf
    • https://cdn.shopify.com/s/files/1/0450/4174/6078/files/lebovimimof.pdf
    • https://cdn.shopify.com/s/files/1/0431/3025/7568/files/25978881176.pdf
    • https://cdn.shopify.com/s/files/1/0432/7027/5236/files/nergie_renouvelable_dfinition.pdf
    • https://cdn.shopify.com/s/files/1/0428/4016/2467/files/71021554427.pdf
    • https://cdn.shopify.com/s/files/1/0433/7732/8278/files/rimaribebobugagixotanug.pdf
    • https://cdn.shopify.com/s/files/1/0430/8657/7828/files/jitiwizusifirale.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_off0000771c.bin
4dbfb01a00dd08352c7a485a00b097749c525468dc470feea79727a786213bf1
pdf-font-stream PDF embedded font (sfnt) at offset 0x771C 5284 bytes
font_01_sfnt_off00008907.bin
4e2c93e680c1ed0f4fb0ef89151fce2bbb4d5a7335414414a262359de0dd57ff
pdf-font-stream PDF embedded font (sfnt) at offset 0x8907 10428 bytes