Malicious PDF — malware analysis report

Static analysis result for SHA-256 f7c1fa078b9debd0…

MALICIOUS

PDF

46.7 KB Created: 2020-08-08 05:43:34 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 2b535eaffa46adda7b1b354919ac062f SHA-1: 6c43dfc35886e803d11bca219fd676fb11745e0f SHA-256: f7c1fa078b9debd0bca5f02b2635a33124c62114eec2670db8b545f2c2a0e180
154 Risk Score

Malware Insights

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

The PDF contains a heuristic firing for a malicious redirector link, pointing to 'https://ttraff.ru/pify?keyword=holy+bible+niv+pdf+free+download'. This URL is presented within the document body, suggesting a social engineering lure to trick users into downloading content. The ML classifier also strongly indicated maliciousness. No scripts were extracted, and the document body was heavily obfuscated, preventing further analysis of its specific intent beyond the malicious link.

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.ru/pify?keyword=holy+bible+niv+pdf+free+download
    • http://files.duganspecialties.com/uploads/1/3/0/7/130740316/ead497249.pdf
    • http://wezuz.tomtomphoto.com/uploads/1/3/1/4/131453574/6a2e16b515.pdf
    • http://files.judymitcham-ahealingpresence.com/uploads/1/3/0/9/130969046/771e89f2.pdf
    • http://files.scmmea-9.org/uploads/1/3/1/4/131438582/175549.pdf
    • http://files.glbhomeimprovement.com/uploads/1/3/0/7/130776861/ronamibixod.pdf
    • https://cdn.shopify.com/s/files/1/0432/6332/8411/files/65435455604.pdf
    • https://cdn.shopify.com/s/files/1/0434/7248/6566/files/86288871163.pdf
    • https://cdn.shopify.com/s/files/1/0434/4800/8866/files/analysis_principles_in_software_engineering.pdf
    • https://cdn.shopify.com/s/files/1/0435/8999/2605/files/defopowir.pdf
    • https://cdn.shopify.com/s/files/1/0434/5505/3989/files/51892451705.pdf
    • https://cdn.shopify.com/s/files/1/0430/5013/9801/files/68172488126.pdf
    • https://cdn.shopify.com/s/files/1/0436/3078/8758/files/xiruzatovuw.pdf
    • https://cdn.shopify.com/s/files/1/0435/7554/1919/files/alcoholic_punch_recipes.pdf
    • https://cdn.shopify.com/s/files/1/0429/7854/1722/files/duramevatere.pdf
    • https://cdn.shopify.com/s/files/1/0435/3507/3440/files/77676615878.pdf
    • https://cdn.shopify.com/s/files/1/0428/4160/4263/files/66770196330.pdf
    • https://cdn.shopify.com/s/files/1/0433/5733/9800/files/32875196937.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_off000076b8.bin
556cc4f18cc1595d879ffdea056887790070000ba8e2815af9a6457529b92a80		 pdf-font-stream PDF embedded font (sfnt) at offset 0x76B8 5212 bytes
font_01_sfnt_off00008894.bin
6f9d2636b43369c734ade8ec66a63cd33b211030acbd13362918f5684995f58c		 pdf-font-stream PDF embedded font (sfnt) at offset 0x8894 10904 bytes

Open this report in the interactive analyzer, or submit your own file for analysis.