Malicious PDF — malware analysis report

Static analysis result for SHA-256 db0b99860b27aee5…

MALICIOUS

PDF

39.5 KB Created: 2020-08-30 23:45:21 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: f69e321872f4f028ec0c6eb3b247cb16 SHA-1: 0f53e7397b92d3516cf78fb944b56a1b92769e43 SHA-256: db0b99860b27aee5a63757f469ff5223a78a995d6219ddaa6d7bb78e069da474
152 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1200 Hardware Add-in T1059.001 PowerShell

The PDF file contains a large number of embedded links, a technique often used in SEO poisoning or link farm attacks. One of these links, https://ttraff.cc/wix?keyword=origami+owl+catalog+2017, points to a known malicious redirector. The ML classifier also strongly indicated maliciousness. The document body contains garbled text but includes the suspicious URL and a benign-looking URL from Shopify, suggesting a lure.

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.cc/wix?keyword=origami+owl+catalog+2017
    • https://cdn.shopify.com/s/files/1/0435/6544/9371/files/hathway_cable_tv_packages_2020.pdf
    • https://cdn.shopify.com/s/files/1/0431/5981/4306/files/27412484367.pdf
    • https://cdn.shopify.com/s/files/1/0431/1184/1949/files/alphabetical_order_and_miscellaneous_series_questions.pdf
    • https://cdn.shopify.com/s/files/1/0430/9958/6714/files/xunazew.pdf
    • https://cdn.shopify.com/s/files/1/0434/5076/1377/files/nejugikewituvujusamagegis.pdf
    • https://cdn.shopify.com/s/files/1/0437/5507/7781/files/autocad_3d_piping_tutorial.pdf
    • https://cdn.shopify.com/s/files/1/0462/6540/1495/files/obs_only_game_audio.pdf
    • https://cdn.shopify.com/s/files/1/0430/2451/5229/files/zusudemusopewomifebusotin.pdf
    • https://cdn.shopify.com/s/files/1/0430/9480/2581/files/nireregopewinasuduvul.pdf
    • https://static.usrfiles.com/ugd/b8c837_4641cd3f38434792bf12e4f0fd3a7cff.pdf
    • https://static.usrfiles.com/ugd/b8c837_fa69dcda05904dac861d848e4ad6c543.pdf
    • https://static.usrfiles.com/ugd/97368a_672f1b85defd491b89313f38f1240b15.pdf
    • https://cdn.shopify.com/s/files/1/0431/0515/7284/files/fekorowopoponejusewuvafi.pdf
    • https://cdn.shopify.com/s/files/1/0430/8926/4794/files/comprehensive_medical_terminology_4th_edition.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_off00004d4f.bin
e35efec870a79f64e9592657dd1075b2109fb5e20371b25fa2758e688b9c1825		 pdf-font-stream PDF embedded font (sfnt) at offset 0x4D4F 5028 bytes
font_01_sfnt_off00005e7d.bin
1535e361424f162e037b884fdb0b44a24e336b9d14690162183ef8b246a4256e		 pdf-font-stream PDF embedded font (sfnt) at offset 0x5E7D 10420 bytes
font_02_sfnt_off000081ba.bin
ff5f0ef16caf3e97cd1984b3a03ea88e11eab8cf63d2ee006085a4b9995833f3		 pdf-font-stream PDF embedded font (sfnt) at offset 0x81BA 4324 bytes

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