Malicious PDF — malware analysis report

Static analysis result for SHA-256 f205e26f5cd61244…

MALICIOUS

PDF

47.4 KB Created: 2020-09-20 11:23:28 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 106f7154aeb11347be1f25c2a9d4cafa SHA-1: 5b1d39c6a939c0bbac156040cbd86f78383d565e SHA-256: f205e26f5cd612444e8b9dab404db336356535c933a4e3d7a60116a09066feea
152 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1059.001 PowerShell T1204.002 Malicious Link

The PDF contains embedded links, one of which points to a known malicious redirector infrastructure. The document body, though heavily obfuscated, contains text that appears to be a lure for "settlers online pvp guide". The presence of multiple embedded URLs, including one leading to a redirector, suggests a phishing or social engineering attack aimed at directing users to malicious content. No scripts were extracted, limiting the analysis of further payload delivery.

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.club/wix?keyword=settlers+online+pvp+guide
    • http://doxuj.usaqingshan.com/uploads/1/3/2/6/132695569/5477877.pdf
    • https://cdn.shopify.com/s/files/1/0432/4815/6835/files/pengertian_animisme.pdf
    • https://cdn.shopify.com/s/files/1/0433/8673/2707/files/coliform_e_coli_petrifilm.pdf
    • https://cdn.shopify.com/s/files/1/0430/4932/0597/files/85634071837.pdf
    • https://cdn.shopify.com/s/files/1/0430/5541/5445/files/noc_format_for_current_account_opening.pdf
    • https://cdn.shopify.com/s/files/1/0438/7612/2792/files/netflix_expires_in_1_day.pdf
    • https://e296e7b7-624c-432d-8595-8ed5ca204ea5.filesusr.com/ugd/05301a_e92bbb56055b44a386e8f66b94bcc29d.pdf?index=true
    • https://842a6c0c-2e49-4d75-a9e8-f8218b89ab2d.filesusr.com/ugd/d6b5da_9c4168b1611b4c338ab509076ed0fbf6.pdf?index=true
    • https://07abba26-b05a-46b2-8752-1a55a07f33f4.filesusr.com/ugd/33ab24_f48080a8aedd44af9c52a26af6a501eb.pdf?index=true
    • https://61883368-235f-4009-bfa7-4f8ca1ead21f.filesusr.com/ugd/895bef_a3e72f8d414844a6b7cbfa64eb1fa85a.pdf?index=true
    • https://9c7f9ea9-b1b5-4984-81aa-a07e62665a9c.filesusr.com/ugd/d94ae5_c86f6d89f4ee4f77a83048c0b44cfcfb.pdf?index=true
    • https://5f386da3-2355-4ec1-ade2-a4dc6b4d8f85.filesusr.com/ugd/b8bbd7_efa21e6dd64241928359857dedfc76e6.pdf?index=true
    • 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_off00006e54.bin
8037fd8a779a64dba9f55ca5adb3486140d31848575510fe4c47b0a5b5c6da26		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6E54 4964 bytes
font_01_sfnt_off00007f44.bin
76a377781d5f4688f81997942579e370b0ca4f556f8d6297004c97fafacef245		 pdf-font-stream PDF embedded font (sfnt) at offset 0x7F44 10372 bytes
font_02_sfnt_off0000a2b5.bin
05d2457133b820fa77aa358e30e9acfbad3f04c46ced9a37296d9311117db176		 pdf-font-stream PDF embedded font (sfnt) at offset 0xA2B5 4324 bytes

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