Malicious PDF — malware analysis report

Static analysis result for SHA-256 d8d70204d020e9e3…

MALICIOUS

PDF

45.1 KB Created: 2020-08-12 15:46:37 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: daeb4c7732edf44e65007362fb2d93ab SHA-1: c4c3f9267a081093efc9adae3b9df8be46b910ba SHA-256: d8d70204d020e9e3644ba8fab88d808c2ee8fe1f595c6073d7f1752a240653f1
152 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1059.001 PowerShell

The PDF was flagged as malicious due to a critical heuristic identifying it as a redirector link to known malicious infrastructure. It also contains a large number of embedded links, characteristic of a link farm designed to distribute malicious content. The primary malicious URL identified is https://ttraff.com/pify?keyword=mirror+matter+pioneering+antimatter+physics+pdf, which likely serves as a gateway to further malicious sites. No scripts were extracted, but the PDF structure and URL analysis strongly suggest a phishing or malware distribution attempt.

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=mirror+matter+pioneering+antimatter+physics+pdf
    • http://files.ambersullivanphotography.com/uploads/1/3/1/3/131379099/xomabos_zigogipabev_kegaweraxaruki.pdf
    • http://zejomut.nataliejimenez.com/uploads/1/3/1/4/131408280/009f5c.pdf
    • http://files.pandlexpressinc.com/uploads/1/3/1/4/131438641/45a60b81b51ed4.pdf
    • http://kezamavek.silentorchestrapoetry.com/uploads/1/3/1/6/131637257/sepijabozavubumigu.pdf
    • https://cdn.shopify.com/s/files/1/0430/1042/4993/files/pifojovep.pdf
    • https://cdn.shopify.com/s/files/1/0430/8126/9401/files/advanced_data_analysis_using_excel.pdf
    • https://cdn.shopify.com/s/files/1/0428/7404/4579/files/royal_cash_registers_manual.pdf
    • https://cdn.shopify.com/s/files/1/0450/1933/2766/files/59355832721.pdf
    • https://cdn.shopify.com/s/files/1/0437/2309/6216/files/cbse_date_sheet_2020_class_10_download.pdf
    • https://cdn.shopify.com/s/files/1/0432/7519/0430/files/anticonvulsivantes_veterinaria.pdf
    • https://cdn.shopify.com/s/files/1/0432/6411/4852/files/nenategi.pdf
    • https://cdn.shopify.com/s/files/1/0434/8238/2502/files/32693762121.pdf
    • https://cdn.shopify.com/s/files/1/0430/6537/6919/files/60845574569.pdf
    • https://cdn.shopify.com/s/files/1/0435/2652/0987/files/63040067338.pdf
    • https://cdn.shopify.com/s/files/1/0432/3423/0429/files/asbabun_nuzul_download.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/15906675896.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_off000068e8.bin
171001c479410e8511dd68cd9a756e0abb4056cd6a0a1a38cfc2e543709142f1		 pdf-font-stream PDF embedded font (sfnt) at offset 0x68E8 5644 bytes
font_01_sfnt_off00007bf3.bin
1f3b9b10182e41f6ff9a18a795fcb5829daa3b0e487ced53b853035bc01cc3a0		 pdf-font-stream PDF embedded font (sfnt) at offset 0x7BF3 13816 bytes

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