Malicious PDF — malware analysis report

Static analysis result for SHA-256 296e40f48c9dcd1b…

MALICIOUS

PDF

45.3 KB Created: 2020-08-19 13:06:02 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 0a1f84dd10e1b166d8bd30673110dca3 SHA-1: b4c47ab1a102413ee2cf59d29259749b7ee6ad2b SHA-256: 296e40f48c9dcd1b83bd9894c22fbad5598ebb85f6df3da14c0e5efea05d532c
152 Risk Score

Malware Insights

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

The PDF contains a large number of embedded links, many of which point to domains associated with redirectors or unknown content. One critical heuristic identified a link to a known malicious redirector infrastructure. The document body itself contains the text '301 1 4 hard stainless steel sheet' and also includes the malicious URL, suggesting a lure to a phishing or scam page. No scripts were extracted from this sample.

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=301+1+4+hard+stainless+steel+sheet
    • http://boredu.saltandhoneycooking.com/uploads/1/3/0/7/130775519/badisebuzonejet-kikepupifiz-dodawuxepogop.pdf
    • http://fovigu.hicksandslicks.com/uploads/1/3/0/7/130739415/movaxe-zakoxumimavej-tajivedisinaden-tosilefa.pdf
    • http://files.theflorecercasitasmx.com/uploads/1/3/1/4/131405976/8235676.pdf
    • http://mewopikor.norcalfilmworks.com/uploads/1/3/1/3/131398404/junuwoxa.pdf
    • http://files.sproutparentcoaching.com/uploads/1/3/0/7/130775701/9006233.pdf
    • https://cdn.shopify.com/s/files/1/0439/1947/4856/files/logique_et_argumentation.pdf
    • https://cdn.shopify.com/s/files/1/0431/6738/3716/files/72592698334.pdf
    • https://cdn.shopify.com/s/files/1/0433/7955/6504/files/astrocytoma_adalah.pdf
    • https://cdn.shopify.com/s/files/1/0432/6499/9590/files/ribozudakoniliwag.pdf
    • https://cdn.shopify.com/s/files/1/0430/4060/4313/files/pet_cambridge_examenes.pdf
    • https://cdn.shopify.com/s/files/1/0432/8217/0022/files/elastic_delete_index_template.pdf
    • https://cdn.shopify.com/s/files/1/0438/0511/4528/files/messenger_lite_apps_for_android.pdf
    • https://cdn.shopify.com/s/files/1/0439/4277/2891/files/adolescent_psychology_around_the_world.pdf
    • https://cdn.shopify.com/s/files/1/0428/2574/4547/files/1531070503.pdf
    • https://cdn.shopify.com/s/files/1/0431/2468/7014/files/how_much_does_lightweight_increase_mining_pseed.pdf
    • https://cdn.shopify.com/s/files/1/0433/7644/3543/files/axis_bank_address_change_form.pdf
    • https://cdn.shopify.com/s/files/1/0434/3165/7621/files/jadusarulalu.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_off000066aa.bin
057f6f5b65ace4ab96a6e3387c0b746437cc327fe98c419c310c5cd7b68c7ee0		 pdf-font-stream PDF embedded font (sfnt) at offset 0x66AA 4944 bytes
font_01_sfnt_off0000775e.bin
cad13768271132b40cd0c8b804ef62cbf76a6d7c1f522e8699911eef4365299f		 pdf-font-stream PDF embedded font (sfnt) at offset 0x775E 10144 bytes
font_02_sfnt_off00009a2b.bin
a542ec26cea93e049a2e27cd59b1347dd9bbdea13775fd7b822b3c2b3136116f		 pdf-font-stream PDF embedded font (sfnt) at offset 0x9A2B 4324 bytes

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