Malicious PDF — malware analysis report

Static analysis result for SHA-256 3c5727d6dde60803…

MALICIOUS

PDF

57.4 KB Created: 2020-09-10 23:56:35 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 3a02690ebd2e751dfc5ab5e44dd3e308 SHA-1: b95108a7620a530293277590b8f46a0aee11af11 SHA-256: 3c5727d6dde60803aa49bdafe9f04702cd9a12ac3c3b432b61c22c1dd700f48c
152 Risk Score

Malware Insights

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

The PDF contains numerous embedded links, with one specifically identified as a malicious redirector. The document body, though heavily obfuscated, contains the URL 'https://ttraff.club/pify?keyword=website+typography+guidelines', suggesting a lure to a malicious site. The presence of a PDF link farm heuristic further supports the malicious intent of distributing links to potentially 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.club/pify?keyword=website+typography+guidelines
    • http://files.communicartspeechpathology.com/uploads/1/3/1/4/131437702/rirexamovikumus.pdf
    • http://tinabumis.tsseafood.com/uploads/1/3/1/0/131069839/zinubapuvowavul.pdf
    • http://files.animalclinicofchardon.preview.pethealthnetworkpro.com/uploads/1/3/1/8/131856039/7258385.pdf
    • http://fopiko.sendingthelight.org/uploads/1/3/1/4/131483372/saropigipem-xedimataf-bumujo-sitosumulaji.pdf
    • http://files.itqansports.com/uploads/1/3/2/6/132681145/e4558ada4a40b.pdf
    • http://files.thefitmenswear.com/uploads/1/3/0/9/130969474/5063826.pdf
    • http://files.aaronjarden.com/uploads/1/3/2/6/132695543/kikef.pdf
    • http://zobas.tarahanish.com/uploads/1/3/0/7/130740206/0e63798e670.pdf
    • https://static.usrfiles.com/ugd/9058e5_33624926975949a384750d746ffeb258.pdf
    • https://static.usrfiles.com/ugd/ef7b09_796d8e7c6b854df8a3cf126ccd0b6e84.pdf
    • https://static.usrfiles.com/ugd/0789d5_3bec501f2a58467dbd1b080796f7c815.pdf
    • https://static.usrfiles.com/ugd/0c8cc8_83a97c4b247f4f76914724baa66493a0.pdf
    • https://cdn.shopify.com/s/files/1/0434/1393/0142/files/xiraz.pdf
    • https://cdn.shopify.com/s/files/1/0441/1500/1496/files/76583075458.pdf
    • https://cdn.shopify.com/s/files/1/0433/0287/9387/files/building_front_elevation_software_free.pdf
    • https://cdn.shopify.com/s/files/1/0437/1008/7317/files/minecraft_dab_mod.pdf
    • https://cdn.shopify.com/s/files/1/0431/9143/5422/files/vitur.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 4

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00008123.bin
d72728c35120b65424a8e9b0ca714b479dfbac5ececc4b13424042480c469486		 pdf-font-stream PDF embedded font (sfnt) at offset 0x8123 5476 bytes
font_01_sfnt_off000093be.bin
1f756b46481ac718095810e133e155ec1caf818687d25c20e8b002f727d713c7		 pdf-font-stream PDF embedded font (sfnt) at offset 0x93BE 2116 bytes
font_02_sfnt_off00009d6a.bin
fc401e7b67e346508c13627f07c499669bfb6c81a568937c0f318ff5e056b3cd		 pdf-font-stream PDF embedded font (sfnt) at offset 0x9D6A 10360 bytes
font_03_sfnt_off0000c112.bin
3134d2a8124011b41b1d37824f116f64d2ebf194fcb07d0c75d2e428ce312102		 pdf-font-stream PDF embedded font (sfnt) at offset 0xC112 16532 bytes

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