Malicious PDF — malware analysis report

Static analysis result for SHA-256 5d706b79abf2b72d…

MALICIOUS

PDF

45.7 KB Created: 2020-08-10 02:46:04 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 7cf1fa454107969070ea71a38d158b8a SHA-1: de41aa5d7af527ce8c2470dad84e6dbb38c004e3 SHA-256: 5d706b79abf2b72df7565410c4ae5302cb52b6eab5c20c677de8a70d22f1a383
154 Risk Score

Malware Insights

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

The PDF contains a link farm and a malicious redirector URL, suggesting it is designed to lead users to potentially harmful content. The document body, though obfuscated, contains the same keywords as the malicious URL, indicating a lure. The presence of numerous embedded URLs, including a critical redirector, strongly suggests a phishing or scam attempt.

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=ansi+150+flange+dimensions+pdf+in+mm
    • http://files.jack-woods.com/uploads/1/3/0/9/130969368/ruzojozubo-zaworutar-xinikane-zusab.pdf
    • http://files.thenovacastrianphilosopher.com/uploads/1/3/1/3/131398091/5964128.pdf
    • http://files.thepatternedpaperplate.com/uploads/1/3/1/3/131379949/80f867ad60113ed.pdf
    • http://files.costaazulllc.com/uploads/1/3/1/3/131398242/pinazir-jatevuruxonewi.pdf
    • http://wesiv.bialymodels.com/uploads/1/3/0/8/130873851/wutimazew-dezokozomuto-regibisesedo-nanurokatifib.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/57189589950.pdf
    • https://cdn.shopify.com/s/files/1/0433/6641/6534/files/dojobuvomepegejoxogubawu.pdf
    • https://cdn.shopify.com/s/files/1/0437/2663/5162/files/abbyy_transformer_2._0_serial.pdf
    • https://cdn.shopify.com/s/files/1/0432/3354/2303/files/18395864181.pdf
    • https://cdn.shopify.com/s/files/1/0429/7284/0090/files/fovozej.pdf
    • https://cdn.shopify.com/s/files/1/0429/1543/0553/files/70912650112.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/norojakibi.pdf
    • https://cdn.shopify.com/s/files/1/0439/5145/6411/files/ateten_gmlek_inceleme.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/65294746239.pdf
    • https://cdn.shopify.com/s/files/1/0434/0364/0984/files/naturally_occurring_toxins_in_food.pdf
    • https://cdn.shopify.com/s/files/1/0429/0379/7913/files/trumpet_voluntary_brass_quintet.pdf
    • https://cdn.shopify.com/s/files/1/0434/4931/9577/files/glass_curtain_wall_section_detail.pdf
    • https://cdn.shopify.com/s/files/1/0431/3192/8730/files/pumeralar.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

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00006a0b.bin
a35185b3335b50cbdc056c82923531b2d4453b5e88bc68ff0c2f3856cd684f6c		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6A0B 5572 bytes
font_01_sfnt_off00007d02.bin
9bba8d70056dac99aadbf98c097fa6319ccf729b1157aa9883185b611aea32ab		 pdf-font-stream PDF embedded font (sfnt) at offset 0x7D02 13564 bytes

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