Malicious PDF — malware analysis report

Static analysis result for SHA-256 d6280162029be78d…

MALICIOUS

PDF

44.9 KB Created: 2020-08-31 01:02:55 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 1532b3f608c805534f21c4c32ff0be52 SHA-1: 35881bc194d54c120e6b3101ef9add3963d34960 SHA-256: d6280162029be78ddafd8294206ef51017e8f8576d6edd03ab23ab6adbff26bb
152 Risk Score

Malware Insights

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

The PDF was flagged as malicious due to a critical heuristic identifying it as a redirector link to known malicious infrastructure. It also contains a PDF link farm, suggesting an attempt to distribute or redirect users to malicious content. The embedded URL 'https://ttraff.cc/wix?keyword=el+acoso+alejo+carpentier+pdf' is the primary indicator of malicious activity.

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=el+acoso+alejo+carpentier+pdf
    • https://cdn.shopify.com/s/files/1/0429/7857/4490/files/legix.pdf
    • https://cdn.shopify.com/s/files/1/0460/3625/4879/files/write_piano_sheet_music_online.pdf
    • https://cdn.shopify.com/s/files/1/0431/3353/4357/files/6439303869.pdf
    • https://cdn.shopify.com/s/files/1/0431/8402/9845/files/35310331399.pdf
    • https://cdn.shopify.com/s/files/1/0433/9925/0072/files/33447936747.pdf
    • https://static.usrfiles.com/ugd/23e9be_77f7d746121947709e41500bec0b01e2.pdf
    • https://static.usrfiles.com/ugd/63d3ad_1e790513232d4918894e201fd6bcd040.pdf
    • https://static.usrfiles.com/ugd/b8c837_edfa53a2e3a74d12ae222b402f5bbddc.pdf
    • https://static.usrfiles.com/ugd/2c8d66_61cdecb6795a4c1aab5f07b0d549b635.pdf
    • https://static.usrfiles.com/ugd/314c35_488a0ce9e6b144d9bf6beb0ca46d71fc.pdf
    • https://static.usrfiles.com/ugd/9ea91e_434ac05dcd9c4068bb29c50115ed9b50.pdf
    • https://static.usrfiles.com/ugd/f515ca_3bfb2f8f42bd4325825b304940b6f21d.pdf
    • https://static.usrfiles.com/ugd/b8c837_81d617f85a66486da067242511db2bf0.pdf
    • https://static.usrfiles.com/ugd/2274a7_26354f05c64646e38e25350b9c466fab.pdf
    • https://cdn.shopify.com/s/files/1/0459/1216/2453/files/govelinizudijirizinomefu.pdf
    • https://cdn.shopify.com/s/files/1/0447/5689/3847/files/how_to_use_max_pro.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/
    • https://cdn.shopify.com/s/files/1/0433/9925/0072/files

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00006f55.bin
1417cba612ae3848054c5cf5c3c4970d850ac6aaad67b3d531743bdc16d55f5e
pdf-font-stream PDF embedded font (sfnt) at offset 0x6F55 5180 bytes
font_01_sfnt_off00008103.bin
3e0af5e647cbe44ba6f5a3a9e3aa4020670e75945674730b80552da0108b9ad1
pdf-font-stream PDF embedded font (sfnt) at offset 0x8103 10924 bytes