Malicious PDF — malware analysis report

Static analysis result for SHA-256 00b39a9c250843f5…

MALICIOUS

PDF

39.6 KB Created: 2020-08-03 05:56:56 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 471c571938ba0388ce3c85896ab44e69 SHA-1: cbda2d16779154fb5de48c8134d457625e4feff6 SHA-256: 00b39a9c250843f5bda6880de30483f00d8cfb37b03c3ea05b2dace4efc997bf
194 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1204.002 Malicious Link T1059.001 PowerShell

The PDF contains a link to a known malicious redirector, ttraff.ru, disguised with a social engineering lure about turning off the Xbox game bar. The document also functions as a link farm, pointing to numerous other PDFs hosted on Shopify. The SE_CLICKFIX heuristic indicates the document likely instructs the user to execute a command, further supporting a malicious intent to redirect the user to 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.
  • ClickFix social engineering attack high SE_CLICKFIX
    Document instructs the user to press Win+R or paste a command into a terminal — consistent with ClickFix attacks that bypass macro restrictions by tricking users into running malicious commands directly
  • 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.ru/pify?keyword=turn+off+xbox+game+bar
    • http://dufukuzo.gardenbedraised.com/uploads/1/3/0/7/130776757/pevaseje.pdf
    • http://files.bergthalmennonitechurch.com/uploads/1/3/0/9/130969151/sasopofa-sanamanuxibas-napapesupi.pdf
    • http://files.everydayevents.us/uploads/1/3/0/7/130738693/damusodugomizul.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://cdn.shopify.com/s/files/1/0435/4398/6340/files/satomidinarixutow.pdf
    • https://cdn.shopify.com/s/files/1/0433/2106/5640/files/factorio_belt_balancer.pdf
    • https://cdn.shopify.com/s/files/1/0430/7098/0247/files/sujirujodilobo.pdf
    • https://cdn.shopify.com/s/files/1/0432/8158/0200/files/21053344427.pdf
    • https://cdn.shopify.com/s/files/1/0432/5713/5257/files/81744711661.pdf
    • https://cdn.shopify.com/s/files/1/0432/7571/4715/files/oil_change_receipt.pdf
    • https://cdn.shopify.com/s/files/1/0433/1126/7990/files/46393596341.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/mozesuseb.pdf
    • https://cdn.shopify.com/s/files/1/0432/7853/2761/files/14017830030.pdf
    • https://cdn.shopify.com/s/files/1/0433/0723/7531/files/vabemaludunefes.pdf
    • https://cdn.shopify.com/s/files/1/0432/0103/6443/files/convert_mp3_to_wma.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_off00005e9c.bin
4c987562c758ba87f3f1f5c4be427900409ea37924ef2added2813a15e37efeb		 pdf-font-stream PDF embedded font (sfnt) at offset 0x5E9C 5032 bytes
font_01_sfnt_off00006fb6.bin
b5c072065d4447bc1e75c391cf1bc87f8d00c95823de7ab936344b5d6e72f84b		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6FB6 9996 bytes

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