Malicious PDF — malware analysis report

Static analysis result for SHA-256 8fd27346e950139d…

MALICIOUS

PDF

39.9 KB Created: 2020-08-19 03:52:54 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 203d0e7e21a3fbd58dc81e5c52441df5 SHA-1: 530354c4484265747837f7297ae4921e2e4e9d4a SHA-256: 8fd27346e950139d3859d2a9baf111e786723931ebe32b24758ae94780ee43a8
94 Risk Score

Malware Insights

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

The PDF file was flagged by a machine learning classifier as malicious and contains a link to a known malicious redirector. The embedded URL, https://ttraff.com/pify?keyword=android+set+default+button+color, is the primary indicator of malicious intent, likely serving as a lure to a phishing or malware distribution site. No scripts were extracted, but the presence of the malicious URL strongly suggests a social engineering attack.

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

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.
  • 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=android+set+default+button+color
    • http://files.friendsofpns.org/uploads/1/3/1/4/131455337/b0581.pdf
    • http://files.mobilephlebotomynorthcarolina.com/uploads/1/3/0/9/130969623/744604.pdf
    • https://cdn.shopify.com/s/files/1/0432/1565/0980/files/95599681607.pdf
    • https://cdn.shopify.com/s/files/1/0430/7035/7661/files/lupe_fiasco-_superstar._mp3.pdf
    • https://cdn.shopify.com/s/files/1/0430/9444/2137/files/cadillac_escalade_2020_brochure.pdf
    • https://cdn.shopify.com/s/files/1/0433/6071/4904/files/73913217679.pdf
    • https://cdn.shopify.com/s/files/1/0436/8711/6965/files/effects_of_deforestation_on_climate_change.pdf
    • https://cdn.shopify.com/s/files/1/0428/7702/6463/files/45418637742.pdf
    • https://cdn.shopify.com/s/files/1/0428/6559/0438/files/homebrew_permission_denied.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_off00005f2d.bin
3ea747e1e6cc219c562489f45b3a77495c9faa950d387536b97a5a46aaac0305		 pdf-font-stream PDF embedded font (sfnt) at offset 0x5F2D 5144 bytes
font_01_sfnt_off000070af.bin
b90b3370dcc9a1968c36d444a19503dbf135cbbec556ab0301f20af5626e692c		 pdf-font-stream PDF embedded font (sfnt) at offset 0x70AF 10240 bytes

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