Malicious PDF — malware analysis report

Static analysis result for SHA-256 68df06f911270979…

MALICIOUS

PDF

40.8 KB Created: 2020-08-29 07:04:32 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 298275f7cb7649743ef24d4f42b9100e SHA-1: a9c1eff8370e8f174000c0f334a5885d07ec2e87 SHA-256: 68df06f911270979da58b91fc5f5076889f9da465496e07db7d3c734137d97e0
154 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains a large number of embedded links, many pointing to Shopify domains hosting other PDFs, but one critical link directs to a known malicious redirector. The document body, though heavily obfuscated, contains the malicious URL and keywords suggesting a lure. This indicates an attempt to redirect users to malicious infrastructure, likely for further exploitation or phishing.

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.ru/wix?keyword=easy+disney+ukulele+songs
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://cdn.shopify.com/s/files/1/0440/7286/1848/files/jovifigak.pdf
    • https://cdn.shopify.com/s/files/1/0430/7353/6161/files/48738387740.pdf
    • https://cdn.shopify.com/s/files/1/0428/2168/1315/files/bestiariusz_warhammer.pdf
    • https://cdn.shopify.com/s/files/1/0431/7318/3643/files/4867652643.pdf
    • https://cdn.shopify.com/s/files/1/0430/1769/9477/files/zurudugugonukime.pdf
    • https://cdn.shopify.com/s/files/1/0430/0485/4426/files/tugaz.pdf
    • https://cdn.shopify.com/s/files/1/0429/7113/6154/files/988421284.pdf
    • https://cdn.shopify.com/s/files/1/0430/8523/4338/files/97063853187.pdf
    • https://cdn.shopify.com/s/files/1/0432/9452/3552/files/kipuv.pdf
    • https://cdn.shopify.com/s/files/1/0428/8738/1155/files/dodifizovikodasubedowe.pdf
    • https://cdn.shopify.com/s/files/1/0427/9438/5575/files/67229865745.pdf
    • https://cdn.shopify.com/s/files/1/0432/8954/2809/files/zodewo.pdf
    • https://cdn.shopify.com/s/files/1/0437/1143/0809/files/archival_research_strategy.pdf
    • https://static.usrfiles.com/ugd/b8c837_0fd34406ab50430ea2086a9692783284.pdf
    • https://static.usrfiles.com/ugd/b8c837_a054bf887ace455db498d2a7c4c64d96.pdf
    • https://static.usrfiles.com/ugd/b8c837_5f3315c5e7464f1bb0f3d6fda657370a.pdf
    • https://static.usrfiles.com/ugd/b8c837_47e9a429be1e4763a90f3b4f09320ff2.pdf
    • https://static.usrfiles.com/ugd/b8c837_ae1bd9d5b078443491e7a7735afbd77a.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/
    • http://scripts.sil.org/OFL

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off000062df.bin
0f9a387a1c9dcdda9aea3d422cb9d5a1b64a6b52b227a7e84381d3ba574dc7a6		 pdf-font-stream PDF embedded font (sfnt) at offset 0x62DF 5020 bytes
font_01_sfnt_off00007412.bin
2ab0be6f8581a1157fd617fbde2f6f527888c907e4a9a7a116cb5ff5d068ae58		 pdf-font-stream PDF embedded font (sfnt) at offset 0x7412 10008 bytes

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