Malicious PDF — malware analysis report

Static analysis result for SHA-256 e3dbbd3f88e7f195…

MALICIOUS

PDF

48.7 KB Created: 2020-08-11 22:40:37 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 8805b52d83970fef53e6134f025d8c2c SHA-1: 90abaad41efaaec97afa5031377f0376372641c3 SHA-256: e3dbbd3f88e7f195b88aae26d7147a2d92f7a0a33fd431c0b79a635d6d916613
120 Risk Score

Malware Insights

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

The PDF file exhibits malicious behavior through its embedded links. The heuristic PDF_MALICIOUS_REDIRECTOR_LINK indicates a direct link to a known malicious redirector at 'https://ttraff.ru/pify?keyword=bidayat+al+mujtahid+english+pdf'. Additionally, the PDF_SEO_LINK_FARM heuristic fired, revealing a large number of external PDF links, with 'https://cdn.shopify.com/s/files/1/0431/0017/6544/files/rijuvezubusosimuwoli.pdf' being the first identified. This suggests a tactic to manipulate search engine results or distribute malicious content through a link farm.

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=bidayat+al+mujtahid+english+pdf
    • http://jugaribit.urbanwaterdoctor.com/uploads/1/3/1/6/131606875/5866899c4efcd67.pdf
    • http://begepe.cpasgc.com/uploads/1/3/0/7/130776485/jobijoka-wuwepak-warar.pdf
    • http://files.hickmanfootball.com/uploads/1/3/0/7/130776788/kamubumul-dobozokowobiz.pdf
    • http://files.matthewsncgutters.com/uploads/1/3/2/7/132741334/2880872.pdf
    • https://cdn.shopify.com/s/files/1/0431/0017/6544/files/rijuvezubusosimuwoli.pdf
    • https://cdn.shopify.com/s/files/1/0428/0070/9791/files/75275863290.pdf
    • https://cdn.shopify.com/s/files/1/0431/9353/2573/files/doxapojesep.pdf
    • https://cdn.shopify.com/s/files/1/0428/3888/4519/files/kuzivelil.pdf
    • https://cdn.shopify.com/s/files/1/0436/5765/8521/files/capital_markets_instruments.pdf
    • https://cdn.shopify.com/s/files/1/0430/3477/1610/files/dark_souls_3_mule.pdf
    • https://cdn.shopify.com/s/files/1/0433/7431/3621/files/64866180357.pdf
    • https://cdn.shopify.com/s/files/1/0435/4460/8920/files/budaya_kerja_dalam_organisasi.pdf
    • https://cdn.shopify.com/s/files/1/0429/5848/7703/files/40807113297.pdf
    • https://cdn.shopify.com/s/files/1/0432/3350/9534/files/kurigovelokudelarexogew.pdf
    • https://cdn.shopify.com/s/files/1/0429/8375/1831/files/kasopori.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 4

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000580e.bin
36aa8d5b1f85bb0c33dd514a04f52a4590839e24412040fd4ae1a6c44dd38c51		 pdf-font-stream PDF embedded font (sfnt) at offset 0x580E 3360 bytes
font_01_sfnt_off0000641a.bin
bd8a42cdb52af8a4045d1ec8b46c623e674d99b649b9315e70a7ba6583a58c0d		 pdf-font-stream PDF embedded font (sfnt) at offset 0x641A 5584 bytes
font_02_sfnt_off0000770c.bin
b9e6de8a51e862e75925ebf947768f1227cd1dea46064d90a8b01020f89a749a		 pdf-font-stream PDF embedded font (sfnt) at offset 0x770C 10532 bytes
font_03_sfnt_off00009af9.bin
d020cc6ba2ae7c090012e329dece873eb4cd97178b4884d0b8e6447d64286d01		 pdf-font-stream PDF embedded font (sfnt) at offset 0x9AF9 17488 bytes

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