Malicious PDF — malware analysis report

Static analysis result for SHA-256 27734bf035887cab…

MALICIOUS

PDF

56.0 KB Created: 2020-08-22 06:32:44 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 0c348d445e335c930b93861583a9151e SHA-1: b97dbfec8336a575019b48a05e364f670c4bec67 SHA-256: 27734bf035887cab8257a77a44d9c30d0d73893cbde2cece84b5445a1336f3d2
152 Risk Score

Malware Insights

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

The PDF contains a prominent link that redirects to a malicious URL, disguised as a 'Bengali movie villain hd video' download. This is further supported by heuristics indicating a malicious redirector and a link farm. The document body, though partially corrupted, contains the malicious URL and appears to be a lure for users seeking entertainment content. The presence of numerous Shopify links, while mostly benign, suggests an attempt to blend in with legitimate content or to host payloads.

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=bengali+movie+villain+hd+video
    • http://wazax.dentalinstrumentcenter.com/uploads/1/3/0/7/130776276/fotuzon_zutapomuvexewil_vomoxizotinimo_pomofoxowo.pdf
    • https://cdn.shopify.com/s/files/1/0436/5965/7374/files/bixepiguzoduporivazefobeg.pdf
    • https://cdn.shopify.com/s/files/1/0429/7415/0809/files/dsd_annual_report_2017.pdf
    • https://cdn.shopify.com/s/files/1/0436/1850/0765/files/suwepojuginaraji.pdf
    • https://cdn.shopify.com/s/files/1/0429/2640/7833/files/suzuki_intruder_1400_service_manual.pdf
    • https://cdn.shopify.com/s/files/1/0430/8657/7818/files/chemistry_2nd_secondary.pdf
    • https://cdn.shopify.com/s/files/1/0431/0705/7825/files/82129617196.pdf
    • https://cdn.shopify.com/s/files/1/0429/7211/9193/files/commercial_lawn_care_contract.pdf
    • https://cdn.shopify.com/s/files/1/0433/6956/2266/files/podezilogi.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/35679391278.pdf
    • https://cdn.shopify.com/s/files/1/0462/8506/2304/files/acquiring_information_through_peers.pdf
    • https://cdn.shopify.com/s/files/1/0438/7468/0987/files/fikafasasub.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_off00007108.bin
6621b9971e7f898b719932167e5a69545f6578574a6770bf1d63bfd2bf7843ac		 pdf-font-stream PDF embedded font (sfnt) at offset 0x7108 5072 bytes
font_01_sfnt_off00008220.bin
53ab446775b81143e3f50ed4c12c6ac27be312d273060ecc92aa766eaefb6070		 pdf-font-stream PDF embedded font (sfnt) at offset 0x8220 10952 bytes
font_02_sfnt_off0000a504.bin
51ebeec29509b87aa858d500e37ac8853184703d07d1f913ce36d8e1dc7764c0		 pdf-font-stream PDF embedded font (sfnt) at offset 0xA504 1800 bytes
font_03_sfnt_off0000ad92.bin
c48a72e938b3dd96e317e60c77e8bddc2d7785f26e0ffa17be1fea94a74c31e5		 pdf-font-stream PDF embedded font (sfnt) at offset 0xAD92 10736 bytes

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