Malicious PDF — malware analysis report

Static analysis result for SHA-256 fe9914fc542ce13c…

MALICIOUS

PDF

49.3 KB Created: 2020-09-05 12:41:59 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: d9b9a841df9ef7c4bf83afdd9375e021 SHA-1: f8451e248c4b4921cd9ee7ebc26951e25ba0c9b2 SHA-256: fe9914fc542ce13cbe8a725d7f4f856640f2e69b354012d6fefd9e7a7c0c8c37
152 Risk Score

Malware Insights

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

The PDF contains a prominent link that, when clicked, redirects to a malicious URL. The document body text, though heavily obfuscated, appears to contain the same movie title used in the malicious URL, suggesting a lure. The PDF also contains a large number of embedded links, many pointing to Shopify, which is indicative of a link farm used for SEO poisoning or distributing 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.link/wix?keyword=amores+perros+full+movie
    • https://cdn.shopify.com/s/files/1/0430/4296/3613/files/miledogiwezimagid.pdf
    • https://cdn.shopify.com/s/files/1/0429/5386/7427/files/zupofavidexiribuwadu.pdf
    • https://cdn.shopify.com/s/files/1/0431/3153/5524/files/8404538196.pdf
    • https://cdn.shopify.com/s/files/1/0447/6112/0919/files/wine_spectator_vintage_chart.pdf
    • https://static.usrfiles.com/ugd/ea78e0_38578132ceeb4e73b202329698bf0106.pdf
    • https://static.usrfiles.com/ugd/5ed537_1948ae768e0a4498a18156dcf9ae3919.pdf
    • https://static.usrfiles.com/ugd/df73ab_e5d69bc5069a47d98f8b258014a71669.pdf
    • https://static.usrfiles.com/ugd/91e123_d67b6a3f53f244b184f008c7c2ade362.pdf
    • https://static.usrfiles.com/ugd/c8df25_c2135c2434ee4b79aa3b9f46f5a1031a.pdf
    • https://cdn.shopify.com/s/files/1/0430/4620/7650/files/vonazoxapesu.pdf
    • https://cdn.shopify.com/s/files/1/0452/1410/5760/files/relovenabegadar.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/vepotarinaf.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_off000076ed.bin
8ae94fec12edd7625508d0030494e70c2fef736e84c6dd1f605de1c4a4d17948
pdf-font-stream PDF embedded font (sfnt) at offset 0x76ED 4584 bytes
font_01_sfnt_off00008686.bin
b429def209f905bac7f9d53a9537cd1bad1955c54b6bd7c034222aa0b58c6921
pdf-font-stream PDF embedded font (sfnt) at offset 0x8686 10404 bytes
font_02_sfnt_off0000aa28.bin
b50a2106bf82917db0cd3cf88f63c5e8cc3298b343ace5cffc591b35df33d24c
pdf-font-stream PDF embedded font (sfnt) at offset 0xAA28 4324 bytes