Malicious PDF — malware analysis report

Static analysis result for SHA-256 7aeee0da936925b5…

MALICIOUS

PDF

68.2 KB Created: 2020-08-12 13:28:14 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 81901f55812ca30da08aee137091eea5 SHA-1: c447bf4b9792fd73e987480fc8315060e4556e91 SHA-256: 7aeee0da936925b50d3b22d4b5eae406eb5794d22fd28085bb3bff5c4f582fc7
120 Risk Score

Malware Insights

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

The PDF contains numerous embedded links, with a critical heuristic firing for a malicious redirector. The document body, though heavily obfuscated, contains a reference to 'pdf to word ocr online' and the malicious URL, suggesting a lure. The presence of a malicious redirector link indicates an attempt to lead the user to a site that likely hosts further malicious content or phishing pages.

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=pdf+to+word+ocr+online
    • http://files.ultraufitness.com/uploads/1/3/0/8/130874246/668f3c8b67.pdf
    • http://files.oregon2odessa.com/uploads/1/3/1/3/131383434/gojofovewizix.pdf
    • http://files.ecobathroomrepaircompany.com.au/uploads/1/3/2/6/132681308/e1e36c.pdf
    • http://files.the-hafizova-hive.com/uploads/1/3/2/6/132696465/dubalutul.pdf
    • http://konevano.leggsmanufacturing.com/uploads/1/3/1/3/131380213/moraje-gatunura.pdf
    • https://cdn.shopify.com/s/files/1/0436/2017/1936/files/mukisajifudijos.pdf
    • https://cdn.shopify.com/s/files/1/0448/0575/0946/files/3_am_eminem.pdf
    • https://cdn.shopify.com/s/files/1/0441/0654/7352/files/nixosawirafopeziba.pdf
    • https://cdn.shopify.com/s/files/1/0430/8716/7637/files/belle_s_library.pdf
    • https://cdn.shopify.com/s/files/1/0430/8421/8532/files/jijidoderagaperusunigozun.pdf
    • https://cdn.shopify.com/s/files/1/0434/2946/2177/files/f_b_service_sequence.pdf
    • https://cdn.shopify.com/s/files/1/0427/7056/3239/files/83724737019.pdf
    • https://cdn.shopify.com/s/files/1/0437/3417/1813/files/difference_between_mixtape_and_album.pdf
    • https://cdn.shopify.com/s/files/1/0430/4368/4503/files/zusupitewatin.pdf
    • https://cdn.shopify.com/s/files/1/0431/9333/5970/files/the_buffettology_workbook_free.pdf
    • https://cdn.shopify.com/s/files/1/0439/5322/5883/files/57704123414.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
stream_007_off0000e959.bin
a716130250a00047e88fd1a77f07518faae33c479792561365b932507aea5aad
decompressed-pdf-stream PDF FlateDecoded stream at offset 0xE959 17324 bytes
font_00_sfnt_off0000a6a7.bin
432c5fd002cb180903f04db55585585c91d074db3d94b915c481c2238ec9c40f
pdf-font-stream PDF embedded font (sfnt) at offset 0xA6A7 3936 bytes
font_01_sfnt_off0000b4d4.bin
ceccb13333cff58ebc67537aa8e7482a0b944ef475324e12e39fc059602a0e50
pdf-font-stream PDF embedded font (sfnt) at offset 0xB4D4 4720 bytes
font_02_sfnt_off0000c501.bin
8a81111043e1e033532a5e92cdc06f3053028e3f218908e1ded0c6c8beeda72d
pdf-font-stream PDF embedded font (sfnt) at offset 0xC501 10728 bytes