Malicious PDF — malware analysis report

Static analysis result for SHA-256 9f167e07f29663c5…

MALICIOUS

PDF

44.7 KB Created: 2020-08-17 06:14:10 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: c837d1bef8aa06c5acee1387edb02b1b SHA-1: 380be557bd414ddfb2531bb6d622341d53e009eb SHA-256: 9f167e07f29663c54c15b1ebe3d7208c41733697838a197889cdb5bf9679e4a8
152 Risk Score

Malware Insights

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

The PDF contains a link farm designed to appear as legitimate content, such as 'calendar template for mac pages'. The primary link, https://ttraff.com/pify?keyword=calendar+template+for+mac+pages, is identified as a malicious redirector. The document's structure and embedded links suggest a social engineering attempt to drive traffic to malicious infrastructure, likely for further exploitation or malware delivery.

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=calendar+template+for+mac+pages
    • http://files.murphybedsetc.com/uploads/1/3/2/6/132695200/mamod-gagoku.pdf
    • http://zesoboz.andrewbattye.net/uploads/1/3/1/4/131452903/tafetanuxela.pdf
    • http://files.daniellessweettreats.co.uk/uploads/1/3/0/7/130776674/pivesadajakevadapo.pdf
    • http://miradatu.americanlebanesefestivalaz.com/uploads/1/3/0/7/130738693/jijufeb_vigizi.pdf
    • https://cdn.shopify.com/s/files/1/0429/5180/3039/files/jidemedek.pdf
    • https://cdn.shopify.com/s/files/1/0435/0361/6165/files/mind_teasers.pdf
    • https://cdn.shopify.com/s/files/1/0435/9825/0141/files/egypt_history_timeline.pdf
    • https://cdn.shopify.com/s/files/1/0434/4840/2081/files/82778020630.pdf
    • https://cdn.shopify.com/s/files/1/0429/2663/7223/files/bajaj_allianz_policy_password.pdf
    • https://cdn.shopify.com/s/files/1/0433/8017/9107/files/73140230630.pdf
    • https://cdn.shopify.com/s/files/1/0438/2212/1122/files/22620928843.pdf
    • https://cdn.shopify.com/s/files/1/0430/5816/7959/files/zezupa.pdf
    • https://cdn.shopify.com/s/files/1/0431/4542/9160/files/dufidolenuvigamijenelejez.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_off000063de.bin
1a368b0e87a8cb2529ca3896b2019813d9eb9e09bfcf2bbf54cb6209238b9ab0
pdf-font-stream PDF embedded font (sfnt) at offset 0x63DE 5236 bytes
font_01_sfnt_off00007599.bin
64bb4f461d175960ac2123e6e38b38d0c03e4a5506096138e8ff7e8ed97965c1
pdf-font-stream PDF embedded font (sfnt) at offset 0x7599 10204 bytes
font_02_sfnt_off00009835.bin
1062cd8ddf90f4344fa193b395386d5669df1a952e5759311ca261a71931f361
pdf-font-stream PDF embedded font (sfnt) at offset 0x9835 4324 bytes