Malicious PDF — malware analysis report

Static analysis result for SHA-256 d8808e52b716e8c9…

MALICIOUS

PDF

42.6 KB Created: 2020-08-21 14:15:13 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: db35edc875d9d78b3f173be702e0507d SHA-1: 003b511cf1125f6e22df86bf80fe3d24fb08c621 SHA-256: d8808e52b716e8c9d0cbb14e6118577a49226fefb3c25de1640e672bbd80009c
152 Risk Score

Malware Insights

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

The PDF file contains a significant number of embedded links, many pointing to Shopify-hosted PDFs, indicative of a link farm. One critical heuristic identified a link to known malicious redirector infrastructure at 'https://ttraff.cc/pify?keyword=servicenow+create+template+role'. The ML classifier strongly flagged this PDF as malicious. The presence of a link farm suggests an attempt to manipulate search results or distribute further malicious content, potentially through the redirector.

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.cc/pify?keyword=servicenow+create+template+role
    • http://files.whenwebandtogether.org/uploads/1/3/0/7/130740375/2087c5.pdf
    • http://files.safetraveltours.com/uploads/1/3/1/1/131164236/9eb93e59d03.pdf
    • http://files.marthatorresfoodstylist.com/uploads/1/3/0/7/130776321/suzakofiwavas.pdf
    • https://cdn.shopify.com/s/files/1/0435/9726/7112/files/dizotimebidelavizogada.pdf
    • https://cdn.shopify.com/s/files/1/0427/8406/3654/files/49025463469.pdf
    • https://cdn.shopify.com/s/files/1/0431/0407/5933/files/87605189750.pdf
    • https://cdn.shopify.com/s/files/1/0437/1510/0840/files/international_business_level_strategies.pdf
    • https://cdn.shopify.com/s/files/1/0438/8696/8987/files/givenamugerosuteda.pdf
    • https://cdn.shopify.com/s/files/1/0439/7678/6078/files/74101908957.pdf
    • https://cdn.shopify.com/s/files/1/0434/0331/3308/files/nepali_full_movie_kohi_noor.pdf
    • https://cdn.shopify.com/s/files/1/0433/8299/7148/files/dukajepa.pdf
    • https://cdn.shopify.com/s/files/1/0428/9573/6988/files/pawalesafuworesevasabi.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_off0000681f.bin
84d41133388f4290b2726abcc4634d5bca6f2dc997ca70e51a37f597009a71d4
pdf-font-stream PDF embedded font (sfnt) at offset 0x681F 5156 bytes
font_01_sfnt_off000079ab.bin
efa8fc82fc01cbdefc2635fd9eafa2b6d08a31cd82720b209e4c40b457cfb96c
pdf-font-stream PDF embedded font (sfnt) at offset 0x79AB 10616 bytes