Malicious PDF — malware analysis report

Static analysis result for SHA-256 e9d06a3f82b78853…

MALICIOUS

PDF

49.2 KB Created: 2020-08-22 00:55:43 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: d5c521e83c77043d8632a24c3eeaf7fc SHA-1: 3640646068a2078944ec17da18706bb81ea33e43 SHA-256: e9d06a3f82b788534dc54c56478c41818d89cd013428b0b6ecb750646b7b7639
152 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1059.001 PowerShell

The PDF contains a significant number of embedded links, many pointing to Shopify domains, but one critical link directs to a known malicious redirector. The heuristic firings indicate this PDF is designed as a link farm, likely to obscure malicious destinations. The primary malicious URL identified is https://ttraff.com/pify?keyword=girl+guides+singapore+campfire+songs, which is used to redirect users to further malicious content.

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=girl+guides+singapore+campfire+songs
    • http://files.smart-lofts.com/uploads/1/3/1/8/131857540/6254082.pdf
    • http://lalaburip.alphaapparelky.com/uploads/1/3/0/8/130874493/jixiniwebepun.pdf
    • https://cdn.shopify.com/s/files/1/0429/8778/2297/files/70823460700.pdf
    • https://cdn.shopify.com/s/files/1/0432/2616/9503/files/jukonaseguwesege.pdf
    • https://cdn.shopify.com/s/files/1/0429/4888/6684/files/sobifutisagaxiwuwesagodid.pdf
    • https://cdn.shopify.com/s/files/1/0440/0722/7542/files/55093027625.pdf
    • https://cdn.shopify.com/s/files/1/0427/4556/1254/files/calidad_estrategica_total.pdf
    • https://cdn.shopify.com/s/files/1/0438/2759/3376/files/nalifebumi.pdf
    • https://cdn.shopify.com/s/files/1/0435/3087/9125/files/athletics_merit_badge_pamphlet.pdf
    • https://cdn.shopify.com/s/files/1/0431/4526/5318/files/project_diva_song_list_download.pdf
    • https://cdn.shopify.com/s/files/1/0434/8120/2854/files/53551225586.pdf
    • https://cdn.shopify.com/s/files/1/0433/4950/8246/files/vit_b12.pdf
    • https://cdn.shopify.com/s/files/1/0428/3334/6719/files/nuvevemoduka.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_off0000789e.bin
fdff4d0dbe8fc2d28a95a6d6f9f5632a846a4758c5a67b54da4ff8d8cd272e23
pdf-font-stream PDF embedded font (sfnt) at offset 0x789E 5508 bytes
font_01_sfnt_off00008b3c.bin
2552f934b72f36e97bd91937bc9cf87519e31913effb9c1cf87df2db513d9479
pdf-font-stream PDF embedded font (sfnt) at offset 0x8B3C 14136 bytes