Malicious PDF — malware analysis report

Static analysis result for SHA-256 48607abcb93d1f92…

MALICIOUS

PDF

89.9 KB Created: 2020-08-19 01:57:50 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: dba8d09efbba4969ebe60355906db1e6 SHA-1: 2ab03ebf566ae5319315a2afda9af17f677b5886 SHA-256: 48607abcb93d1f923fb01325e5d4f7a5e6ece71a627744946ec06eee3aa1a406
152 Risk Score

Malware Insights

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

The PDF was flagged by multiple critical heuristics indicating malicious redirector links and a link farm. The ML classifier also strongly indicated maliciousness. The document body contains a URL that points to a known malicious redirector, which is likely intended to lure users to a malicious site. The presence of numerous other links, many hosted on Shopify, suggests a coordinated effort to distribute malicious content or phish users.

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

Heuristics 4

  • 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.
  • Object number defined twice with different bodies info PDF_DUPLICATE_OBJ_BODY_INCREMENTAL
    The same indirect object (N G) is defined more than once with different body bytes. First-wins and last-wins readers will resolve different content, which is a parser-confusion shape used by targeted PDFs. Body-only differences are common in benign incremental updates, so severity is raised only when the duplicate carries active content.
  • 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=beethoven+9+sinfonia
    • http://files.felicitystevens.com/uploads/1/3/0/8/130874587/6146981.pdf
    • http://wusugewa.stopplervirtualcommunications.com/uploads/1/3/2/6/132682076/kurav.pdf
    • http://files.mareda.org/uploads/1/3/1/1/131163867/5747792.pdf
    • https://cdn.shopify.com/s/files/1/0431/4074/3330/files/saxikire.pdf
    • https://cdn.shopify.com/s/files/1/0428/5536/6822/files/bruner_theory_of_cognitive_development.pdf
    • https://cdn.shopify.com/s/files/1/0431/6073/1808/files/simple_gifts_piano.pdf
    • https://cdn.shopify.com/s/files/1/0434/8932/9312/files/google_account_manager_for_android_9.pdf
    • https://cdn.shopify.com/s/files/1/0444/2878/7879/files/alimentos_ricos_en_potasio_fisterra.pdf
    • https://cdn.shopify.com/s/files/1/0428/5693/9676/files/synthesis_of_benzopyrylium_salts.pdf
    • https://cdn.shopify.com/s/files/1/0433/4659/1903/files/pafubigazabonolamekizosab.pdf
    • https://cdn.shopify.com/s/files/1/0434/7595/9973/files/grilled_chicken_recipes_in_malayalam_language.pdf
    • https://cdn.shopify.com/s/files/1/0433/0484/5465/files/82693941208.pdf
    • https://cdn.shopify.com/s/files/1/0438/3988/1373/files/87179261237.pdf
    • https://cdn.shopify.com/s/files/1/0432/5192/5155/files/xesebosunulup.pdf
    • https://cdn.shopify.com/s/files/1/0428/5097/5910/files/underlord_dota_2_guide.pdf
    • https://cdn.shopify.com/s/files/1/0436/0785/1171/files/26470921962.pdf
    • https://cdn.shopify.com/s/files/1/0431/8153/9489/files/giorno_theme_piano_sheet_music_easy.pdf
    • https://cdn.shopify.com/s/files/1/0433/0923/6374/files/5127283394.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_off0000efd6.bin
f3f3eee721388c1f17932830719572cd9ce601fbf835e8bf3d011db1a04180cb		 pdf-font-stream PDF embedded font (sfnt) at offset 0xEFD6 5600 bytes
font_01_sfnt_off00010367.bin
999c464418486b4daec40beb051b27f31f23acd0a0955e2afb12dfe8b34d2adf		 pdf-font-stream PDF embedded font (sfnt) at offset 0x10367 4992 bytes
font_02_sfnt_off0001146e.bin
7506668189dea456d49babd30f0916c41c7bb9b143437f7e80a058da88fc402e		 pdf-font-stream PDF embedded font (sfnt) at offset 0x1146E 11744 bytes
font_03_sfnt_off00013c3f.bin
87c945622487e46a52a4fb473e0668a3c5fe16f2f83f4f59ee49336f73c8630a		 pdf-font-stream PDF embedded font (sfnt) at offset 0x13C3F 18080 bytes

Open this report in the interactive analyzer, or submit your own file for analysis.