Malicious PDF — malware analysis report

Static analysis result for SHA-256 3536fbb222eb6ded…

MALICIOUS

PDF

42.8 KB Created: 2020-08-24 02:18:01 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: fcea7ccc013ea6261af003dd580d6abc SHA-1: 1566f809b62e40cfc679393dfcd44ba1ac81d0a3 SHA-256: 3536fbb222eb6dedd8b7207b7c486d93d9e851c257527c3a570579e8b5654db1
152 Risk Score

Malware Insights

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

The PDF contains a link to a known malicious redirector, ttraff.com, which is used to lure victims with a fake Adobe Flash Player update. The document body and embedded links further support this phishing lure. The ML classifier also strongly indicated maliciousness.

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=adobe+flash+player+8+android
    • http://files.mathtvcourses.com/uploads/1/3/0/8/130813988/tuveworu.pdf
    • https://cdn.shopify.com/s/files/1/0433/0356/7515/files/33315282574.pdf
    • https://cdn.shopify.com/s/files/1/0452/4739/8050/files/possessive_adjectives_worksheet_for_beginners.pdf
    • https://cdn.shopify.com/s/files/1/0433/1870/6331/files/nadhom_asmaul_husna_arab_dan_latin.pdf
    • https://cdn.shopify.com/s/files/1/0429/0917/1879/files/63507113962.pdf
    • https://cdn.shopify.com/s/files/1/0433/3669/5959/files/internal_carotid_artery_anatomy.pdf
    • https://cdn.shopify.com/s/files/1/0431/3664/7317/files/rofevufivijimeta.pdf
    • https://cdn.shopify.com/s/files/1/0437/5802/6903/files/wabixegugodu.pdf
    • https://cdn.shopify.com/s/files/1/0431/0469/8535/files/cadence_virtuoso_user_guide.pdf
    • https://cdn.shopify.com/s/files/1/0434/3631/0693/files/dukulivuvitiled.pdf
    • https://cdn.shopify.com/s/files/1/0430/2936/4885/files/96745304577.pdf
    • https://cdn.shopify.com/s/files/1/0433/7899/9446/files/tazovuk.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_off0000684c.bin
72fb883fc2f2f8d5257765aad7cc8327510ac528ceec981988cc63d320571f1e		 pdf-font-stream PDF embedded font (sfnt) at offset 0x684C 5552 bytes
font_01_sfnt_off00007b25.bin
abea743b66a38473ca18631f20b0eab1c5662af3a0b37ce1d4787079bf3e11a7		 pdf-font-stream PDF embedded font (sfnt) at offset 0x7B25 10452 bytes

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