Malicious PDF — malware analysis report

Static analysis result for SHA-256 0c75880dfa0e2a2a…

MALICIOUS

PDF

48.8 KB Created: 2020-07-30 18:47:41 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 7e3d3bdbc8b1d2fcb53567c6e123f361 SHA-1: fe655c4c7ccc29dc0d5715887b33c8aeb9dbbf71 SHA-256: 0c75880dfa0e2a2afa16dbfd79d9a89a26e60ebfd7c4347a2284bf329b6a4c9b
162 Risk Score

Malware Insights

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

The PDF contains numerous embedded links, many pointing to what appears to be a link farm designed for SEO manipulation. One critical heuristic identified a link to known malicious redirector infrastructure (ttraff.com), suggesting a phishing or malicious content delivery attempt. The document body, though heavily obfuscated, contains language indicating urgency, further supporting a malicious intent to trick the user into clicking the malicious link.

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.
  • Urgency / deadline lure low SE_URGENCY_LURE
    Document contains urgency or deadline language ('account will be terminated', 'action required within 24 hours', etc.) — useful context, but low-signal without other findings
  • 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.com/pify?keyword=iv+admixture+adalah+pdf
    • http://files.lshbooks.com/uploads/1/3/0/7/130740158/ropuwoxugewexaz_zixodazisa_magosiketa.pdf
    • http://files.cartiercouturee.com/uploads/1/3/1/3/131384414/1787622.pdf
    • http://files.swofcp.com/uploads/1/3/0/7/130775596/9358081.pdf
    • http://files.blissfisher.net/uploads/1/3/0/7/130776599/nudukix.pdf
    • http://files.southportantiquemall.net/uploads/1/3/0/7/130775372/xanewuwu.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://cdn.shopify.com/s/files/1/0434/4761/5649/files/77329626709.pdf
    • https://cdn.shopify.com/s/files/1/0429/9777/6543/files/24658083363.pdf
    • https://cdn.shopify.com/s/files/1/0428/3901/5580/files/69123377275.pdf
    • https://cdn.shopify.com/s/files/1/0431/1279/2225/files/zunokedigesiputifoxa.pdf
    • https://cdn.shopify.com/s/files/1/0431/7547/7416/files/widufuxomidopevemi.pdf
    • https://cdn.shopify.com/s/files/1/0431/5496/4629/files/46119917311.pdf
    • https://cdn.shopify.com/s/files/1/0433/9449/8709/files/vubaxekinax.pdf
    • https://cdn.shopify.com/s/files/1/0433/2240/9125/files/bawenazodo.pdf
    • https://cdn.shopify.com/s/files/1/0433/8361/9736/files/65383182130.pdf
    • https://cdn.shopify.com/s/files/1/0431/0528/8349/files/xokasib.pdf
    • https://cdn.shopify.com/s/files/1/0431/1079/3382/files/11672220293.pdf
    • https://cdn.shopify.com/s/files/1/0431/7754/1787/files/76870617611.pdf
    • https://cdn.shopify.com/s/files/1/0433/8925/5847/files/bimamubageti.pdf
    • https://cdn.shopify.com/s/files/1/0434/4302/8120/files/kabixuwojunod.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_off00008222.bin
436ad1ed75e6fa86c875474b24e2cc1345dcd678feedeee94aa5247a71fe445e		 pdf-font-stream PDF embedded font (sfnt) at offset 0x8222 4832 bytes
font_01_sfnt_off00009291.bin
1740c7a30b895ec6a270710b7fb34ae43ed402bf19fb1b60668efbeaf38a50b4		 pdf-font-stream PDF embedded font (sfnt) at offset 0x9291 10312 bytes

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