Malicious PDF — malware analysis report

Static analysis result for SHA-256 a8bf1300aee7dc2f…

MALICIOUS

PDF

67.8 KB Created: 2020-08-11 12:55:05 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: f05490a0db433c84ed63c00b5e411a8c SHA-1: 49462a9fc1b14afc24b402708302f3e3d0346238 SHA-256: a8bf1300aee7dc2fd9a572a05f1740f9d6522b01fc7482f2f29fd7d505821f38
152 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 the URL 'https://ttraff.cc/pify?keyword=understanding+business+ethics+pdf', which is also flagged as a malicious redirector. The presence of a large number of external PDF links, many hosted on cdn.shopify.com, suggests a link farm or SEO poisoning attempt to distribute malicious content.

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.cc/pify?keyword=understanding+business+ethics+pdf
    • http://binope.morganhomesliving.com/uploads/1/3/0/7/130775085/robafolunum_porelu.pdf
    • http://files.jimpendergrass.com/uploads/1/3/2/8/132815961/xabixejeje-nenowapiwage-jisematonalon.pdf
    • http://files.henryforddigitalmedia.com/uploads/1/3/1/4/131408169/pufijepisof_lijemukuzabuz_dewuwagoba.pdf
    • http://solize.trainedbyinsulin.com/uploads/1/3/0/7/130739024/7076412.pdf
    • http://files.troop965.org/uploads/1/3/1/3/131380397/1037236.pdf
    • http://solize.trainedb
    • https://cdn.shopify.com/s/files/1/0432/5664/3739/files/migagalazunegoj.pdf
    • https://cdn.shopify.com/s/files/1/0431/5742/2229/files/67212792657.pdf
    • https://cdn.shopify.com/s/files/1/0431/3127/3365/files/72586909259.pdf
    • https://cdn.shopify.com/s/files/1/0431/3425/5258/files/4263226721.pdf
    • https://cdn.shopify.com/s/files/1/0451/0108/8921/files/betujufoj.pdf
    • https://cdn.shopify.com/s/files/1/0434/5564/3813/files/wemurip.pdf
    • https://cdn.shopify.com/s/files/1/0430/5358/0439/files/kizedevafubimorum.pdf
    • https://cdn.shopify.com/s/files/1/0436/1610/8707/files/60024778670.pdf
    • https://cdn.shopify.com/s/files/1/0434/2264/6422/files/62865846054.pdf
    • https://cdn.shopify.com/s/files/1/0430/5331/8298/files/fupuxirorurixobefiweje.pdf
    • https://cdn.shopify.com/s/files/1/0430/6357/4682/files/mass_effect_3_soundtrack.pdf
    • https://cdn.shopify.com/s/files/1/0438/3123/0624/files/angelology_books.pdf
    • https://cdn.shopify.com/s/files/1/0434/0164/2135/files/tovitigis.pdf
    • https://cdn.shopify.com/s/files/1/0435/8438/9275/files/kimakabu.pdf
    • https://cdn.shopify.com/s/files/1/0429/5399/8489/files/dijasapixopiwidajibopul.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_off0000ccb5.bin
da5da0cbcb5c4d74138ffe71441cb612405a9075edb13b9265435681150bec23		 pdf-font-stream PDF embedded font (sfnt) at offset 0xCCB5 5516 bytes
font_01_sfnt_off0000df63.bin
695f8b938439627d53fc1767c5759ea4749a60489f16a8a9f2717310bbf07429		 pdf-font-stream PDF embedded font (sfnt) at offset 0xDF63 10088 bytes

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