Malicious PDF — malware analysis report

Static analysis result for SHA-256 7b16e1b7fec864e0…

MALICIOUS

PDF

41.8 KB Created: 2020-08-18 13:23:20 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 62f8668cf61481cdda6345407330a0bd SHA-1: 84f28d18433a8121f7da5f63aceeda71a882b5b4 SHA-256: 7b16e1b7fec864e052c5e9ce4a427723ad1ca4a2da288a50abacd7e22c0ccffe
120 Risk Score

Malware Insights

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

The PDF file contains a significant number of embedded links, identified as a PDF link farm. One of these links, 'https://ttraff.com/pify?keyword=bird+houses+osrs+guide', points to a known malicious redirector. The document body is heavily obfuscated but contains this URL, suggesting the primary purpose is to redirect users to malicious infrastructure, potentially for phishing or malware delivery.

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.com/pify?keyword=bird+houses+osrs+guide
    • http://vukadenax.azzaziworkshop.com/uploads/1/3/1/4/131453177/vugirevebagikeje.pdf
    • http://munoxamak.getbentzfarm.com/uploads/1/3/1/4/131436978/2052274.pdf
    • http://vimekezo.goingawayguide.com/uploads/1/3/1/8/131860787/9146388.pdf
    • http://famowe.michelbehrens.com/uploads/1/3/0/8/130813528/pexikurexa.pdf
    • https://cdn.shopify.com/s/files/1/0430/4781/3269/files/tezisa.pdf
    • https://cdn.shopify.com/s/files/1/0433/6628/5464/files/38717710464.pdf
    • https://cdn.shopify.com/s/files/1/0435/4942/5823/files/differential_and_integral_calculus_formula.pdf
    • https://cdn.shopify.com/s/files/1/0433/2837/2886/files/vuzowofegexuvip.pdf
    • https://cdn.shopify.com/s/files/1/0434/2936/3878/files/spelling_bee_grade_3_word_list.pdf
    • https://cdn.shopify.com/s/files/1/0432/8462/7624/files/boond_boond_roy_audio_song.pdf
    • https://cdn.shopify.com/s/files/1/0434/0062/6325/files/xotijitisikitaril.pdf
    • https://cdn.shopify.com/s/files/1/0434/8434/8569/files/fobujinodumubarefaxep.pdf
    • https://cdn.shopify.com/s/files/1/0434/7399/3890/files/oblivion_sheet_music_flute.pdf
    • https://cdn.shopify.com/s/files/1/0433/0697/5382/files/mijobotatevigemejoji.pdf
    • https://cdn.shopify.com/s/files/1/0435/3789/1487/files/84938490238.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 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000675c.bin
b728854b50ac87e9b0e2ae3dd01509b92256d4819fcbf3519727ce3b97222659		 pdf-font-stream PDF embedded font (sfnt) at offset 0x675C 4892 bytes
font_01_sfnt_off000077f6.bin
5f534262a1c5b90fd27c321ce122461d0eb1e87ac33e8fa3ff9374183cbb40a4		 pdf-font-stream PDF embedded font (sfnt) at offset 0x77F6 10128 bytes

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