Malicious PDF — malware analysis report

Static analysis result for SHA-256 f68a781649a13b6d…

MALICIOUS

PDF

45.0 KB Created: 2020-07-30 13:45:45 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 4c37a588a1a5157731feff0b2608e6ee SHA-1: 5957270e0210d2fbe88941b1f5d60dc84c9791e5 SHA-256: f68a781649a13b6d0dd0a3644d4d672861bdc25af13b06aa47c48f562b772e5c
120 Risk Score

Malware Insights

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

The PDF file contains numerous links to external websites, a common tactic for SEO link farms and redirecting users to malicious content. One critical heuristic identified a link to a known malicious redirector infrastructure. The document body, though heavily obfuscated, appears to be a lure related to 'factores bioticos y abioticos pdf', likely intended to trick users into clicking the embedded malicious links.

Heuristics 3

  • 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.
  • 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/pify?keyword=cuales+son+los+factores+bioticos+y+abioticos+pdf
    • http://files.akademikreatifindonesia.com/uploads/1/3/1/6/131636828/41bf1c5.pdf
    • http://files.wisefeline.com/uploads/1/3/2/7/132740467/rubajalolulegekogixe.pdf
    • http://files.mrflynnhistoryclass.com/uploads/1/3/2/6/132682239/rebulegofigizegerej.pdf
    • http://files.supercoolyconcepts.com/uploads/1/3/1/0/131070327/ab9bea2d37.pdf
    • http://files.thekoalaproject.org/uploads/1/3/2/8/132814935/tomanog.pdf
    • https://cdn.shopify.com/s/files/1/0431/8907/6117/files/11677784761.pdf
    • https://cdn.shopify.com/s/files/1/0430/9146/0247/files/27553488278.pdf
    • https://cdn.shopify.com/s/files/1/0436/9619/3686/files/69104280569.pdf
    • https://cdn.shopify.com/s/files/1/0430/6078/9409/files/vanuvoxekofisosavegenubaw.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/46552055365.pdf
    • https://cdn.shopify.com/s/files/1/0432/8584/0036/files/45207338583.pdf
    • https://cdn.shopify.com/s/files/1/0432/1198/0964/files/9938623943.pdf
    • https://cdn.shopify.com/s/files/1/0428/2325/4179/files/vomugolivakalifogo.pdf
    • https://cdn.shopify.com/s/files/1/0429/2644/0607/files/sibefajafe.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/1/0436/9619/3686/

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00007149.bin
ee5e5506ed1c670c0586169fbc2ca5ab05e88cf523811b929c5140c6ca24407a		 pdf-font-stream PDF embedded font (sfnt) at offset 0x7149 5296 bytes
font_01_sfnt_off0000835c.bin
ffcd6378fa4242455cbad702ced763e1bdf02fe323becde414170a1e8a3efdfe		 pdf-font-stream PDF embedded font (sfnt) at offset 0x835C 10320 bytes

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