Malicious PDF — malware analysis report

Static analysis result for SHA-256 52207546a814c366…

MALICIOUS

PDF

55.7 KB Created: 2020-08-14 15:07:41 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 299a19d452ed26e3f33253724f442dc8 SHA-1: e82a4b89b07cd0b0421620bb6edbcb3a0ffe0b9d SHA-256: 52207546a814c3662808abdd14b98f0bf278a0a7c4ff83f5af3e5c7e5ce4e3dd
154 Risk Score

Malware Insights

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

The PDF contains multiple embedded links, with one identified as a malicious redirector. The document body, though heavily obfuscated, contains text that appears to be a lure related to 'football games 2012 pc', likely intended to entice users to click the malicious link. The ML classifier strongly flagged this PDF as malicious, supporting the assessment of a malicious redirector attack pattern.

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.com/pify?keyword=football+games++2012+pc
    • http://files.tammykjohnson.com/uploads/1/3/1/8/131858044/bogoga.pdf
    • http://files.ottertotsplayandlearn.com/uploads/1/3/1/4/131453588/59b3e0.pdf
    • http://popufux.hda.com/uploads/1/3/0/7/130775850/2513963.pdf
    • https://cdn.shopify.com/s/files/1/0431/9726/8128/files/42871498596.pdf
    • https://cdn.shopify.com/s/files/1/0434/6875/0998/files/80696178465.pdf
    • https://cdn.shopify.com/s/files/1/0431/4329/9234/files/75134748475.pdf
    • https://cdn.shopify.com/s/files/1/0432/8397/2256/files/video_maker_from_photos_software_free.pdf
    • https://cdn.shopify.com/s/files/1/0431/3215/8116/files/xapukusutowemaxereden.pdf
    • https://cdn.shopify.com/s/files/1/0432/3858/8584/files/52324959202.pdf
    • https://cdn.shopify.com/s/files/1/0431/0417/4233/files/xxix_in_roman_numerals.pdf
    • https://cdn.shopify.com/s/files/1/0432/7895/8758/files/jexebigu.pdf
    • https://cdn.shopify.com/s/files/1/0438/3218/0893/files/9069315298.pdf
    • https://cdn.shopify.com/s/files/1/0447/9628/0993/files/mega_man_x_rom_hacks.pdf
    • https://cdn.shopify.com/s/files/1/0431/2258/9853/files/vorasowixugisawa.pdf
    • https://cdn.shopify.com/s/files/1/0436/6227/8809/files/kafebidotofus.pdf
    • https://cdn.shopify.com/s/files/1/0439/1760/7067/files/shakespeare_beaucoup_de_bruit_pour_rien.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_off00009c5e.bin
f829aba667d7462e7037cc35ac3280489b85616ab7628078b289b7dc4a9579f5
pdf-font-stream PDF embedded font (sfnt) at offset 0x9C5E 5576 bytes
font_01_sfnt_off0000af55.bin
93c2ea33f2570062092df3b09d78e5582db00c8c2ae500984db3ba1eb46c2597
pdf-font-stream PDF embedded font (sfnt) at offset 0xAF55 10212 bytes