Malicious PDF — malware analysis report

Static analysis result for SHA-256 4502b5672535fc22…

MALICIOUS

PDF

46.8 KB Created: 2020-08-26 06:47:33 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 0bc9cf06262961cbcb033076c9f756ed SHA-1: b2a11418950a53ca8ef9be6f7214294bf42668fb SHA-256: 4502b5672535fc2242ce860b98f76db26bbf4e1d704fec9ce786dcaaeb1fdb80
152 Risk Score

Malware Insights

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

The PDF contains a critical heuristic firing for linking to known malicious redirector infrastructure, specifically 'ttraff.com'. The document body also contains numerous links to Shopify-hosted PDFs, indicating a link farm strategy. The primary malicious URL is https://ttraff.com/pify?keyword=differences+between+the+adversarial+and+inquisitorial+systems, which likely serves as a lure to a malicious payload.

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=differences+between+the+adversarial+and+inquisitorial+systems
    • http://files.survivinglogic.ca/uploads/1/3/0/7/130739601/8761311.pdf
    • https://cdn.shopify.com/s/files/1/0465/5418/5878/files/31273148054.pdf
    • https://cdn.shopify.com/s/files/1/0438/2903/5158/files/codex_astra_militarum.pdf
    • https://cdn.shopify.com/s/files/1/0428/1411/1903/files/10490838045.pdf
    • https://cdn.shopify.com/s/files/1/0429/2398/3015/files/new_hollywood_movie_worldwide_box_office_report.pdf
    • https://cdn.shopify.com/s/files/1/0431/1928/0288/files/benedictionale_romanum.pdf
    • https://cdn.shopify.com/s/files/1/0437/2096/6293/files/21548973141.pdf
    • https://cdn.shopify.com/s/files/1/0457/9970/2694/files/chroma_key_kinemaster_apk.pdf
    • https://cdn.shopify.com/s/files/1/0434/0069/1866/files/android_webview_detect_back_button.pdf
    • https://cdn.shopify.com/s/files/1/0452/5228/0480/files/food_biotechnology_journal.pdf
    • https://cdn.shopify.com/s/files/1/0438/8736/2216/files/59210079095.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_off00006014.bin
a60c1d4645f81fbf77c72fba8b042de93a66d95d61e0ae7743cd0e60a742af16
pdf-font-stream PDF embedded font (sfnt) at offset 0x6014 3508 bytes
font_01_sfnt_off00006c9a.bin
58d3c791026bcf8b7336c12dc0a2377a7c6e1b16eb320e680b1b1db55462f5a6
pdf-font-stream PDF embedded font (sfnt) at offset 0x6C9A 5660 bytes
font_02_sfnt_off00007fc1.bin
6f485ffa456bec01405aba2d51260e553248342888e0136d593f66569bb9f525
pdf-font-stream PDF embedded font (sfnt) at offset 0x7FC1 9260 bytes
font_03_sfnt_off00009f63.bin
a542ec26cea93e049a2e27cd59b1347dd9bbdea13775fd7b822b3c2b3136116f
pdf-font-stream PDF embedded font (sfnt) at offset 0x9F63 4324 bytes