Malicious PDF — malware analysis report

Static analysis result for SHA-256 3e829974a70431b3…

MALICIOUS

PDF

70.2 KB Created: 2020-08-09 13:20:44 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 7e5abe0e19452d6b58e8a5748ce1ac18 SHA-1: f01c68edee3f85f5286e9e6870a41abdf81086ce SHA-256: 3e829974a70431b389bb717d75b4a58eea9caef131df04d8ba026cfe963a00ed
120 Risk Score

Malware Insights

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

The PDF file contains numerous embedded links, with one heuristic specifically identifying a link to known malicious redirector infrastructure. The document body, though partially corrupted, contains text suggesting a lure for free educational material downloads. The primary malicious URL identified is ttraff.ru, which is used in conjunction with a keyword search to disguise the malicious intent. The presence of multiple Shopify links suggests an attempt to blend malicious links with seemingly benign ones.

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=std+12+ncert+biology+textbook+pdf+free+download+in+gujarati
    • http://files.stefiecakesandtreats.com/uploads/1/3/0/8/130813111/dufiwabegawit.pdf
    • http://files.inclusivejourneys.com/uploads/1/3/1/4/131437701/267ec0ab4b1565.pdf
    • http://files.golden-meadowlark.com/uploads/1/3/1/4/131408899/gesaxava_vazamowaxarexu_bazozatevag_gimusipebopufo.pdf
    • https://cdn.shopify.com/s/files/1/0428/6152/7206/files/cloud_architecture_patterns_using_microsoft_azure_download.pdf
    • https://cdn.shopify.com/s/files/1/0438/0511/4528/files/halloween_worksheets_for_preschool.pdf
    • https://cdn.shopify.com/s/files/1/0432/6758/8252/files/putigorurexelapeka.pdf
    • https://cdn.shopify.com/s/files/1/0429/6579/4965/files/degolawapimaxuraturejoma.pdf
    • https://cdn.shopify.com/s/files/1/0435/1783/7467/files/43843017895.pdf
    • https://cdn.shopify.com/s/files/1/0436/3878/4158/files/cofactor_of_2x2_matrix.pdf
    • https://cdn.shopify.com/s/files/1/0430/0469/0581/files/26745227867.pdf
    • https://cdn.shopify.com/s/files/1/0431/5404/7125/files/69529149305.pdf
    • https://cdn.shopify.com/s/files/1/0432/5959/2859/files/vidisexunenupoxetutaxufo.pdf
    • https://cdn.shopify.com/s/files/1/0435/8150/5695/files/teorie_chimie_anorganica_bac.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 6

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00007962.bin
127b44c9f93874c96d25eb7ddc4688780d8877ce931cf296363fb5748d8d514b		 pdf-font-stream PDF embedded font (sfnt) at offset 0x7962 6744 bytes
font_01_sfnt_off00008a49.bin
499a32f685f28f62c8904a4a0c436735cb2bd317edd53a346e2ffab8632a67c2		 pdf-font-stream PDF embedded font (sfnt) at offset 0x8A49 5856 bytes
font_02_sfnt_off00009e52.bin
c705fa6c33b903be25aa72735add8fc777e0bc059f592516dad005cec14cb950		 pdf-font-stream PDF embedded font (sfnt) at offset 0x9E52 4140 bytes
font_03_sfnt_off0000ad7e.bin
4337d186b1817e27be1664a0b0e2ad0c8a30395981f8057899c514029397c159		 pdf-font-stream PDF embedded font (sfnt) at offset 0xAD7E 10120 bytes
font_04_sfnt_off0000ce56.bin
04d892fe81025d22e65c257f85c203b7606b394ae1dd0a4e9740aa574fa8cb03		 pdf-font-stream PDF embedded font (sfnt) at offset 0xCE56 14768 bytes
font_05_sfnt_off0000fbac.bin
b50a2106bf82917db0cd3cf88f63c5e8cc3298b343ace5cffc591b35df33d24c		 pdf-font-stream PDF embedded font (sfnt) at offset 0xFBAC 4324 bytes

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