Malicious PDF — malware analysis report

Static analysis result for SHA-256 7712517a32b43eec…

MALICIOUS

PDF

45.4 KB Created: 2020-08-11 04:16:06 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 0913d48dc70957224b5817930db533e6 SHA-1: d8b2b2096b0e691022289c49927fc49f48aaa685 SHA-256: 7712517a32b43eec51e1de55f980cc10d0806f1bbb9bc68075fb939976bf3e1c
152 Risk Score

Malware Insights

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

The PDF document exhibits characteristics of a link farm, embedding a large number of external URLs. One of these URLs, 'https://ttraff.cc/pify?keyword=manajemen+sumber+daya+manusia+marwansyah+pdf', is identified as a malicious redirector. The ML classifier also strongly flagged this PDF as malicious. The document's purpose appears to be to lure users into clicking these links, potentially leading to phishing sites or malware downloads.

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=manajemen+sumber+daya+manusia+marwansyah+pdf
    • http://files.sanctuaryandstone.com/uploads/1/3/0/7/130775970/lerijiwegewosofazes.pdf
    • http://files.floridatennismagazine.com/uploads/1/3/0/8/130874658/dukulugatu-bebam-xuvavojeli.pdf
    • http://files.artesanfruit.com/uploads/1/3/0/8/130814346/gapafigabeponu.pdf
    • http://files.crankinblackbox.com/uploads/1/3/1/6/131606537/a083936628eba.pdf
    • http://files.kagmanlibrary.org/uploads/1/3/1/0/131070934/fevunogave_sataterejoku_vesivit.pdf
    • https://cdn.shopify.com/s/files/1/0438/5685/5190/files/38524772621.pdf
    • https://cdn.shopify.com/s/files/1/0433/4646/0840/files/89640504739.pdf
    • https://cdn.shopify.com/s/files/1/0433/7818/0259/files/gonezobixixovifej.pdf
    • https://cdn.shopify.com/s/files/1/0432/4045/6360/files/sapuza.pdf
    • https://cdn.shopify.com/s/files/1/0430/6888/3097/files/61011024903.pdf
    • https://cdn.shopify.com/s/files/1/0427/9749/8535/files/72008258506.pdf
    • https://cdn.shopify.com/s/files/1/0434/2838/0839/files/lutekabofipuxavuzivijuko.pdf
    • https://cdn.shopify.com/s/files/1/0438/3303/2864/files/jinadubobewofuvasot.pdf
    • https://cdn.shopify.com/s/files/1/0433/9525/2374/files/mipoxomowanemusabasam.pdf
    • https://cdn.shopify.com/s/files/1/0432/5530/0249/files/jamix.pdf
    • https://cdn.shopify.com/s/files/1/0437/9043/4455/files/glimmerglass_book.pdf
    • https://cdn.shopify.com/s/files/1/0432/1820/6887/files/afroman_because_i_got_high_lyrics.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_off0000747e.bin
48e907cd71584c31261df3e4d8f803e6062a7bebba7d9ac4cde5ed89df10e7d7		 pdf-font-stream PDF embedded font (sfnt) at offset 0x747E 5664 bytes
font_01_sfnt_off000087b5.bin
1779d8cd7789e6d7f6d41f4ea2e290ea0d87efc924f649e476087d2fc0ae2aa8		 pdf-font-stream PDF embedded font (sfnt) at offset 0x87B5 9588 bytes

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