Malicious PDF — malware analysis report

Static analysis result for SHA-256 ce1ac6e72e5114f7…

MALICIOUS

PDF

50.4 KB Created: 2020-09-02 19:01:01 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 1cb1b690b207d25e64549b9c6e59d973 SHA-1: 750c0fd71a92380e4a532b5e8fda76760735ba14 SHA-256: ce1ac6e72e5114f7238ab651fcf798e8c07c0d480932bfd3d75b73d791eeae9a
152 Risk Score

Malware Insights

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

The PDF contains numerous embedded links, with one specifically pointing to a known malicious redirector. The document body, though heavily obfuscated, contains text related to 'flight radar 24 apkpure' and the malicious URL, suggesting a lure to a phishing or malware distribution site. The ML classifier also strongly indicated maliciousness.

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.club/wix?keyword=flight+radar+24+apkpure
    • https://static.usrfiles.com/ugd/db1da1_7e51abb979e14619bddc85024709d4d6.pdf
    • https://static.usrfiles.com/ugd/87fdc7_6c3127f29a654b6a9b70e9d9a9488c58.pdf
    • https://static.usrfiles.com/ugd/7dd30d_84ad77b9944b46bdb75a6eecabc5a5e1.pdf
    • https://static.usrfiles.com/ugd/24853a_65d111aad52a4bb4b69f59c3948f9d6e.pdf
    • https://static.usrfiles.com/ugd/cc03df_65cbdbaabc8945e0a1368a8d7e6fcf45.pdf
    • https://cdn.shopify.com/s/files/1/0465/1941/9038/files/nuvoriki.pdf
    • https://cdn.shopify.com/s/files/1/0431/5630/8123/files/sogavezubimidewuxudiw.pdf
    • https://cdn.shopify.com/s/files/1/0433/7637/8014/files/biochemistry_garrett_5th_edition_test_bank.pdf
    • https://cdn.shopify.com/s/files/1/0430/1655/2605/files/jogijoxatubutozonoxiv.pdf
    • https://cdn.shopify.com/s/files/1/0438/3283/6256/files/types_of_autoimmunity.pdf
    • https://cdn.shopify.com/s/files/1/0437/0215/7466/files/96298337308.pdf
    • https://cdn.shopify.com/s/files/1/0428/6545/9366/files/jiwiwesa.pdf
    • https://cdn.shopify.com/s/files/1/0431/6463/1195/files/minecraft_call_of_duty_zombies.pdf
    • https://cdn.shopify.com/s/files/1/0430/0757/4179/files/collage_maker_lite_apk.pdf
    • https://cdn.shopify.com/s/files/1/0432/7079/9510/files/pobutanakafogaga.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_off00006420.bin
03dc5536d65b6e14eab8c6735dcd11e2d62e3aafb5df2e3e066ce068c15e639b		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6420 5284 bytes
font_01_sfnt_off00007613.bin
9ec740a05c9bd7ddbfb9abab8152e08d9990f516ab279154a887fe4a8c1534c2		 pdf-font-stream PDF embedded font (sfnt) at offset 0x7613 2288 bytes
font_02_sfnt_off00008052.bin
0871091ee14d9dc909d8c6471d83c6498168f492529b51ed2080bf112724e40a		 pdf-font-stream PDF embedded font (sfnt) at offset 0x8052 11864 bytes
font_03_sfnt_off0000a72d.bin
22e7d64dc2c8c088d80156f018a99e28b724eec794b0a6098809cb3b55e1162d		 pdf-font-stream PDF embedded font (sfnt) at offset 0xA72D 16184 bytes

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