Malicious PDF — malware analysis report

Static analysis result for SHA-256 284880631fa3a906…

MALICIOUS

PDF

52.7 KB Created: 2020-08-11 23:13:17 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 07d3da1f1681b64cb9267b467c02d12e SHA-1: b0bf2e513268b0d20148d98e589134c3c0231de1 SHA-256: 284880631fa3a906cd43b00716c7b967e107c369ff714fa1e84b5c9e3954cf1d
152 Risk Score

Malware Insights

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

The PDF document contains a large number of embedded links, many of which point to external PDF files hosted on various domains. One prominent link directs to a known malicious redirector at 'ttraff.cc', suggesting a phishing or malware distribution attempt. The document body, though partially corrupted, contains text related to 'Atari 2600 adventure manual pdf', likely a lure to entice users to click the malicious links.

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=atari+2600+adventure+manual+pdf
    • http://files.devils-trumpet.com/uploads/1/3/2/6/132682171/2c186cb73.pdf
    • http://files.quasichad.com/uploads/1/3/1/3/131380001/4157473.pdf
    • http://files.kswatsondesigns.com/uploads/1/3/1/3/131398117/rovizumazij_pevov_golaxitaj.pdf
    • http://sumakepud.pioneerplumbingheating.com/uploads/1/3/0/7/130738720/givofefopo.pdf
    • http://tinep.chamberforacause.org/uploads/1/3/1/4/131437130/b3605e6.pdf
    • https://cdn.shopify.com/s/files/1/0430/6488/5397/files/gatifenitokapo.pdf
    • https://cdn.shopify.com/s/files/1/0429/5488/3231/files/37954078275.pdf
    • https://cdn.shopify.com/s/files/1/0430/0872/1045/files/gibupapalizijaj.pdf
    • https://cdn.shopify.com/s/files/1/0437/4449/3720/files/vibemojexu.pdf
    • https://cdn.shopify.com/s/files/1/0431/0741/8273/files/24736154387.pdf
    • https://cdn.shopify.com/s/files/1/0430/9227/9445/files/jalopurisaxesijolusaleg.pdf
    • https://cdn.shopify.com/s/files/1/0435/7790/1219/files/probability_and_statistics_degroot_3rd_edition.pdf
    • https://cdn.shopify.com/s/files/1/0433/5815/9006/files/xovepojofuno.pdf
    • https://cdn.shopify.com/s/files/1/0430/9568/7328/files/tetipofojimox.pdf
    • https://cdn.shopify.com/s/files/1/0431/8094/9658/files/558766037.pdf
    • https://cdn.shopify.com/s/files/1/0428/4855/1068/files/94405443743.pdf
    • https://cdn.shopify.com/s/files/1/0434/4774/6726/files/quantitative_aptitude_tricks_and_shortcuts_free_download_in_tamil.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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00007570.bin
b912df7f031e2b16f1ae8667075aed82561b37ffe868baf5a1fb53cefb738122		 pdf-font-stream PDF embedded font (sfnt) at offset 0x7570 5256 bytes
font_01_sfnt_off0000872d.bin
80f3c7aab7eb4a806ee021b70ed4bd8b66c1ab18539135bc08300e505f48f739		 pdf-font-stream PDF embedded font (sfnt) at offset 0x872D 15048 bytes
font_02_sfnt_off0000b58e.bin
1062cd8ddf90f4344fa193b395386d5669df1a952e5759311ca261a71931f361		 pdf-font-stream PDF embedded font (sfnt) at offset 0xB58E 4324 bytes

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