Malicious PDF — malware analysis report

Static analysis result for SHA-256 567b1ddd146ab555…

MALICIOUS

PDF

33.7 KB Created: 2020-08-02 03:19:29 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 3a1952df0651a3542c8e3e71beb89a33 SHA-1: 8d6c224eaacb0264e7e7d84bcca0d07245d1bc7a SHA-256: 567b1ddd146ab555435416e7a9294ba8d9393fbb0f031a1586a6bce670992f29
152 Risk Score

Malware Insights

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

This PDF document contains a large number of embedded links, many of which point to a link farm infrastructure. The primary redirector URL, https://ttraff.com/pify?keyword=nox+app+player+reddit, is flagged as malicious. The document's structure suggests it is designed to host numerous external links, likely to distribute malware or conduct phishing attacks. No scripts were extracted, but the heuristic firings strongly indicate malicious redirection.

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=nox+app+player+reddit
    • http://files.professional-tourguides.com/uploads/1/3/2/6/132682802/e1a034c803.pdf
    • http://files.theishayafoundation.org/uploads/1/3/0/8/130814127/459683.pdf
    • http://files.bestwholeself.com/uploads/1/3/1/4/131453251/7d831516.pdf
    • http://files.bassetfriendsforever.com/uploads/1/3/1/8/131856105/9738393.pdf
    • http://files.puertoricanparade.org/uploads/1/3/1/3/131382217/272f61714.pdf
    • https://cdn.shopify.com/s/files/1/0431/5657/0266/files/2429470327.pdf
    • https://cdn.shopify.com/s/files/1/0430/1615/9381/files/jarate.pdf
    • https://cdn.shopify.com/s/files/1/0433/8411/1267/files/nuwave_pic_pro.pdf
    • https://cdn.shopify.com/s/files/1/0435/8150/5695/files/wibokalowipasopufetaped.pdf
    • https://cdn.shopify.com/s/files/1/0428/3272/4124/files/wadelefonepone.pdf
    • https://cdn.shopify.com/s/files/1/0430/8133/4933/files/55553426172.pdf
    • https://cdn.shopify.com/s/files/1/0435/4136/4890/files/dibafexitokomusojuto.pdf
    • https://cdn.shopify.com/s/files/1/0435/2350/6336/files/52141629973.pdf
    • https://cdn.shopify.com/s/files/1/0428/2236/9446/files/lilozex.pdf
    • https://cdn.shopify.com/s/files/1/0427/5719/3895/files/16482071577.pdf
    • https://cdn.shopify.com/s/files/1/0434/1871/4264/files/kigexutaranatifu.pdf
    • https://cdn.shopify.com/s/files/1/0437/7850/6904/files/92688925193.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_off00004a8e.bin
e91907907a55bba05bfc1b92d266e0c922f8cdc8ea9b40fe58196981343a057c
pdf-font-stream PDF embedded font (sfnt) at offset 0x4A8E 4912 bytes
font_01_sfnt_off00005b61.bin
fe3304f703a86487b5e43849da9e11199730ffea1302cb37ae2792093fe488f8
pdf-font-stream PDF embedded font (sfnt) at offset 0x5B61 9048 bytes