Malicious PDF — malware analysis report

Static analysis result for SHA-256 dadd5f42730a5c0e…

MALICIOUS

PDF

43.9 KB Created: 2020-08-20 09:33:04 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 4a29759a064de57a286a431707242633 SHA-1: bd356385a19f7ae7815c921e2dab16b1483df43e SHA-256: dadd5f42730a5c0e553cb87707bafb1d634d5e48bdf5416d6ad2d8551c4690ca
120 Risk Score

Malware Insights

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

The PDF file contains a critical heuristic firing for a malicious redirector link, which is the primary attack vector. The document body and embedded links suggest a lure related to 'Android root for Windows' to entice users to click the malicious URL. The file also exhibits characteristics of a link farm, with numerous embedded URLs pointing to external resources, many of which are hosted on Shopify. The primary malicious URL identified is https://ttraff.cc/pify?keyword=android+root++for+windows.

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.cc/pify?keyword=android+root++for+windows
    • http://digupa.goatskins.com/uploads/1/3/1/4/131407300/4605077.pdf
    • http://files.johnddunne.net/uploads/1/3/1/3/131381681/raxuwe_xegirojunuguta_motuxibevun.pdf
    • http://files.heatherquilters.org.uk/uploads/1/3/2/8/132815882/fesawevo.pdf
    • http://files.woolandmen.com/uploads/1/3/0/8/130814234/f54f24ab2d2.pdf
    • http://rogujid.mtprospectlimo.com/uploads/1/3/1/3/131379174/kogapomumoko_xivamimuwex.pdf
    • https://cdn.shopify.com/s/files/1/0429/9164/8929/files/10750542512.pdf
    • https://cdn.shopify.com/s/files/1/0435/7632/8355/files/30184395701.pdf
    • https://cdn.shopify.com/s/files/1/0440/7951/3752/files/58391499108.pdf
    • https://cdn.shopify.com/s/files/1/0429/7791/9129/files/47487936369.pdf
    • https://cdn.shopify.com/s/files/1/0430/4781/3269/files/14756626484.pdf
    • https://cdn.shopify.com/s/files/1/0433/4298/7422/files/dijunuxikerofo.pdf
    • https://cdn.shopify.com/s/files/1/0434/8814/9668/files/annamayya_movie_songs_lyrics_in_english.pdf
    • https://cdn.shopify.com/s/files/1/0430/7196/3296/files/27929202034.pdf
    • https://cdn.shopify.com/s/files/1/0435/5391/5043/files/nokia_7_plus_android_one_specification.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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000628b.bin
11273aff9932d871958522b24f315783fa9641fdc7aca1f513342f41c964dc3a		 pdf-font-stream PDF embedded font (sfnt) at offset 0x628B 4412 bytes
font_01_sfnt_off0000718f.bin
6fefbad2f2b5ae54fcb06d6ec26fbd700443e8c7c901f634478672e9493f6586		 pdf-font-stream PDF embedded font (sfnt) at offset 0x718F 10196 bytes
font_02_sfnt_off0000948f.bin
cd94ef65598b1866d0653cdd88243d989fd81359c0e770c2d3a4858f1c2f6d34		 pdf-font-stream PDF embedded font (sfnt) at offset 0x948F 4324 bytes

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