Malicious PDF — malware analysis report

Static analysis result for SHA-256 2c78fad52024e056…

MALICIOUS

PDF

46.7 KB Created: 2020-08-24 17:14:39 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: ce73d9cac46e8e7ab7fc6dad0db3148a SHA-1: 2fee5e05a108054db266bcaab28cc9e9a207b8aa SHA-256: 2c78fad52024e056a0c4e8cd265f15d24291999298c18749d5afa9f3afefe777
152 Risk Score

Malware Insights

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

The PDF contains a mass external link farm, with a critical heuristic firing for a malicious redirector. The primary malicious URL identified is https://ttraff.cc/pify?keyword=swot+matrix+analysis+template, which likely serves as a lure to a malicious payload. The document body, though heavily obfuscated, also contains this URL, reinforcing its role as a delivery mechanism.

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=swot+matrix+analysis+template
    • http://files.sicilyreview.com/uploads/1/3/1/4/131406344/nadajemuk.pdf
    • http://files.millennialbarbers.com/uploads/1/3/2/7/132740873/5594280.pdf
    • http://zupefaja.gracechurchmolokai.com/uploads/1/3/1/4/131406082/2360742.pdf
    • http://files.chawnaschroeder.com/uploads/1/3/1/4/131408415/4062782.pdf
    • http://separili.goodshepherdeyeclinic.org/uploads/1/3/1/4/131438345/wutegojamu.pdf
    • http://separili.goodshe
    • https://cdn.shopify.com/s/files/1/0429/0484/6503/files/bahubali_movie_hd_1080p_video.pdf
    • https://cdn.shopify.com/s/files/1/0431/1639/6697/files/4634901555.pdf
    • https://cdn.shopify.com/s/files/1/0437/5147/3313/files/inotropic_drugs_and_their_uses_in_critical_care.pdf
    • https://cdn.shopify.com/s/files/1/0440/6090/1528/files/pesujijojele.pdf
    • https://cdn.shopify.com/s/files/1/0431/6397/5835/files/13073695904.pdf
    • https://cdn.shopify.com/s/files/1/0434/0737/6542/files/zufud.pdf
    • https://cdn.shopify.com/s/files/1/0430/9870/1977/files/53889415007.pdf
    • https://cdn.shopify.com/s/files/1/0447/8310/8253/files/piletilutosokawuvavuwaw.pdf
    • https://cdn.shopify.com/s/files/1/0437/2643/8550/files/seal_physical_training_guide.pdf
    • https://cdn.shopify.com/s/files/1/0431/4877/1477/files/zogijidojubadilokobo.pdf
    • https://cdn.shopify.com/s/files/1/0427/9359/9132/files/35581821852.pdf
    • https://cdn.shopify.com/s/files/1/0437/1018/5621/files/change_file_to_word_free_download.pdf
    • https://cdn.shopify.com/s/files/1/0430/3935/9127/files/subject_verb_agreement_with_indefinite_pronouns_worksheets.pdf
    • https://cdn.shopify.com/s/files/1/0433/4184/0535/files/806632947.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_off00006b71.bin
a8b33e7d98603024603c64fb51e00ea3feb0afc28b6550dc0f50fd7d12c7beb2		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6B71 5116 bytes
font_01_sfnt_off00007cc6.bin
92e4b89b0ab7040a873c216760412d6f0a388cf5769b3ab5a1ece92bea2c6ccc		 pdf-font-stream PDF embedded font (sfnt) at offset 0x7CC6 10092 bytes
font_02_sfnt_off00009f4e.bin
1062cd8ddf90f4344fa193b395386d5669df1a952e5759311ca261a71931f361		 pdf-font-stream PDF embedded font (sfnt) at offset 0x9F4E 4324 bytes

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