Malicious PDF — malware analysis report

Static analysis result for SHA-256 6d01be9cf3ad4375…

MALICIOUS

PDF

58.4 KB Created: 2020-08-08 16:32:55 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 072b5dfd1726b1ad4781afda696ad589 SHA-1: ed6b37b021de31ecfcbffc092d5ba136c489bbfe SHA-256: 6d01be9cf3ad437513b98b469259aba1e5edeb11bad7cf8b9ea3a5fc39f3799b
162 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1059.007 JavaScript

The PDF contains numerous links to external PDF files, masquerading as a free dictionary download. One of the primary links, 'https://ttraff.cc/pify?keyword=free+download+english+arabic+dictionary+pdf', is identified as a malicious redirector. The document's structure and the presence of a download button lure suggest an attempt to trick users into downloading potentially harmful content.

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

Heuristics 5

  • 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.
  • Visual download / call-to-action button lure low SE_DOWNLOAD_BUTTON
    Document contains a call-to-action phrase ('Click here to download', 'Download Now', etc.) — low-signal unless other findings point to a malicious workflow
  • 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=free+download+english+arabic+dictionary+pdf
    • http://files.toolbeltoflearning.com/uploads/1/3/1/4/131483492/nugasuvagokix.pdf
    • http://tozewow.thedoorlakewood.org/uploads/1/3/1/6/131636725/8d7191dfba5f6.pdf
    • http://files.harpoonreview.com/uploads/1/3/0/7/130776458/fixobuxeda_nekakupo.pdf
    • http://files.nzosi.com/uploads/1/3/2/7/132740270/kobijo-vaxipa-fonom-relobitamademu.pdf
    • http://files.saloysius.org/uploads/1/3/1/0/131070933/buwerupolozo.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • http://www.opentle.org
    • https://cdn.shopify.com/s/files/1/0433/9941/3925/files/bemakenivez.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/72163988246.pdf
    • https://cdn.shopify.com/s/files/1/0433/7709/8910/files/45854713245.pdf
    • https://cdn.shopify.com/s/files/1/0437/9901/9682/files/kemizemurexufedujelota.pdf
    • https://cdn.shopify.com/s/files/1/0431/5276/9192/files/corsair_headset_mic_not_working.pdf
    • https://cdn.shopify.com/s/files/1/0431/5676/6882/files/wivobejelonegatugapa.pdf
    • https://cdn.shopify.com/s/files/1/0429/9898/8949/files/lawejepobukexoxog.pdf
    • https://cdn.shopify.com/s/files/1/0434/5459/5224/files/ba_1st_year_books_download.pdf
    • https://cdn.shopify.com/s/files/1/0428/4956/6886/files/13041399306.pdf
    • https://cdn.shopify.com/s/files/1/0432/2027/1259/files/3780759590.pdf
    • https://cdn.shopify.com/s/files/1/0433/3246/8904/files/69207419990.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/
    • http://scripts.sil.org/OFL
    • http://www.gnu.org/licenses/gpl.html

Extracted artifacts 4

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00005764.bin
93990b6d75b84dac0bda8e2bb78ca70c635a6c3794629e32420c74b3b30d6b86		 pdf-font-stream PDF embedded font (sfnt) at offset 0x5764 15604 bytes
font_01_sfnt_off00008a3a.bin
13bc2092c39ddecffea3f5211a319b43cc9d3549d686a15d7841302f514fcb91		 pdf-font-stream PDF embedded font (sfnt) at offset 0x8A3A 5704 bytes
font_02_sfnt_off00009dad.bin
fbf7c768830fa4b35a845b759759da5b9d952bcefd8cd8bf3beb4d23034c7574		 pdf-font-stream PDF embedded font (sfnt) at offset 0x9DAD 9080 bytes
font_03_sfnt_off0000b74c.bin
109c5821362cb057d0644f0797ab72a4788e6d7a2349cf6ac75da4116414721d		 pdf-font-stream PDF embedded font (sfnt) at offset 0xB74C 10800 bytes

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