Malicious PDF — malware analysis report

Static analysis result for SHA-256 abf42270dcb49b8c…

MALICIOUS

PDF

51.3 KB Created: 2020-08-06 13:38:37 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: e00419fde27da675cacacb56873026d4 SHA-1: c7f864d5f113c91960164d98b9dd10484e6a52fe SHA-256: abf42270dcb49b8ccbdb24868cd3a76d572a529455cccfa512865f6482d9f67f
154 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1204.002 Malicious Link

The PDF was flagged by multiple critical heuristics indicating malicious redirector links and a link farm. The document body contains a URL that points to a known malicious redirector, 'ttraff.com', which is likely used to funnel users to further malicious sites. The presence of numerous other PDF links, many pointing to unknown domains, reinforces the link farm attack pattern. No scripts were extracted from this sample.

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=angulos+en+la+circunferencia+problemas+pdf
    • http://norodosil.gentsff.com/uploads/1/3/1/6/131636664/1696999.pdf
    • http://files.amanda-winston.com/uploads/1/3/1/6/131606782/3cef4ce8886528.pdf
    • http://files.differenttranslation.com/uploads/1/3/0/7/130775659/dekamug.pdf
    • http://files.columbussouthside.org/uploads/1/3/1/4/131413040/1430240.pdf
    • http://files.annettesplacenz.com/uploads/1/3/1/3/131384025/89aac8e.pdf
    • https://cdn.shopify.com/s/files/1/0434/5597/1492/files/71505550439.pdf
    • https://cdn.shopify.com/s/files/1/0431/9726/8128/files/gufiwifinujikopixunogevep.pdf
    • https://cdn.shopify.com/s/files/1/0437/5478/2869/files/converter_to_word_online_without_email.pdf
    • https://cdn.shopify.com/s/files/1/0435/2134/3647/files/alphabet_coloring.pdf
    • https://cdn.shopify.com/s/files/1/0439/1701/7243/files/15161765313.pdf
    • https://cdn.shopify.com/s/files/1/0438/2218/6656/files/80215416008.pdf
    • https://cdn.shopify.com/s/files/1/0440/4235/4853/files/76595126281.pdf
    • https://cdn.shopify.com/s/files/1/0431/3631/9639/files/70705254931.pdf
    • https://cdn.shopify.com/s/files/1/0427/6004/4710/files/73101448518.pdf
    • https://cdn.shopify.com/s/files/1/0433/9574/3907/files/46572545396.pdf
    • https://cdn.shopify.com/s/files/1/0430/6488/5402/files/nedupewedofowutulufum.pdf
    • https://cdn.shopify.com/s/files/1/0428/7424/1187/files/dimoganuma.pdf
    • https://cdn.shopify.com/s/files/1/0427/6856/4380/files/20819839843.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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off000071fb.bin
02bfa99418653879eec6315a0a77086d51742bbd8d8ad9f303c70b5d6b8b58d3		 pdf-font-stream PDF embedded font (sfnt) at offset 0x71FB 2040 bytes
font_01_sfnt_off00007b8d.bin
afc310bd15c645a62b87c1ae718f833dac086f2746d52a59c9e0fd913ab21e8c		 pdf-font-stream PDF embedded font (sfnt) at offset 0x7B8D 5604 bytes
font_02_sfnt_off00008e88.bin
964e13d26e3be73e42558f0fc28141888f1799b5150b71ca841145747c4e33a5		 pdf-font-stream PDF embedded font (sfnt) at offset 0x8E88 15356 bytes

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