Malicious PDF — malware analysis report

Static analysis result for SHA-256 48c2aa48c261e0ad…

MALICIOUS

PDF

44.4 KB Created: 2020-07-29 20:09:17 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: fcc2bcd4b37f2ed038e95bb1ff5f45f4 SHA-1: 5eae3f9971a368b972e27fccf4d2e247dfd180c9 SHA-256: 48c2aa48c261e0ad8bd13726e0f5beb32c926db35870e7fb1e7ee4d6db644290
152 Risk Score

Malware Insights

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

The PDF was flagged as malicious by an ML classifier and contains a critical heuristic indicating it links to known malicious redirector infrastructure. Additionally, it features a large number of embedded links, many hosted on cdn.shopify.com, suggesting a link farm designed to obscure the ultimate destination. The primary malicious URL identified is ttraff.cc, which is likely used for phishing or malware delivery.

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=food+and+nutrition+definition+pdf
    • http://files.spiritofgoldenjoinery.com/uploads/1/3/1/0/131069819/3613563.pdf
    • http://files.shiveringstringswest.com/uploads/1/3/1/3/131398542/tilepomulev.pdf
    • http://files.carrollhospitalmetz.com/uploads/1/3/2/8/132816042/a9c1c0ee891.pdf
    • http://files.bettycarlsonartist.com/uploads/1/3/0/8/130814043/poxasafep-joretowiwigenal.pdf
    • http://files.berrysgardenservices.co.uk/uploads/1/3/1/4/131437504/2971024.pdf
    • http://files.bettycarlsonartist.com/uploads/1/3/0/8/130814043/poxasafep-jo
    • https://cdn.shopify.com/s/files/1/0436/9108/1882/files/jugejosivututipak.pdf
    • https://cdn.shopify.com/s/files/1/0431/4012/0733/files/milikupeme.pdf
    • https://cdn.shopify.com/s/files/1/0432/8469/3160/files/falukumerixapisebimatajux.pdf
    • https://cdn.shopify.com/s/files/1/0428/6939/1527/files/51411379205.pdf
    • https://cdn.shopify.com/s/files/1/0432/5824/9376/files/savogopuxebifepotoxoliza.pdf
    • https://cdn.shopify.com/s/files/1/0438/4676/2656/files/lelelew.pdf
    • https://cdn.shopify.com/s/files/1/0437/6569/4613/files/39234237295.pdf
    • https://cdn.shopify.com/s/files/1/0433/9872/5793/files/53982640681.pdf
    • https://cdn.shopify.com/s/files/1/0429/6481/1927/files/zinipudizasapinekotixiro.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_off000071a8.bin
dcc5dcf337c1bd8c1d27bee63d1b3a3950b8116c14055bfada9073eb1b66fdfb
pdf-font-stream PDF embedded font (sfnt) at offset 0x71A8 4664 bytes
font_01_sfnt_off00008191.bin
0b1ffe1b151fbdacdf93dcfdf2e43770a1e7c04127365c644f10b19da925866e
pdf-font-stream PDF embedded font (sfnt) at offset 0x8191 10316 bytes