Malicious PDF — malware analysis report

Static analysis result for SHA-256 70aa90752a527625…

MALICIOUS

PDF

53.3 KB Created: 2020-08-19 23:15:09 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 2753e7ed3a99f969cfcd9165b980829f SHA-1: 5cdcb67208557898b78105967668d06ec2724615 SHA-256: 70aa90752a5276257532a25473db3d770803661c987ded0217ea00a956769540
154 Risk Score

Malware Insights

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

The PDF contains embedded links that point to known malicious redirector infrastructure, specifically 'ttraff.com'. The document body, though obfuscated, also contains this URL, suggesting an attempt to lure the user to a malicious site. The presence of numerous external PDF links further indicates a link farm, a common tactic for SEO manipulation or distributing malicious content.

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.com/pify?keyword=a+train+9+v4+0
    • http://files.titanumseeds.com/uploads/1/3/0/7/130775413/9993776.pdf
    • http://gedaketud.healingnotesllc.com/uploads/1/3/1/6/131637814/52c7289e.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • http://www.opentle.org
    • https://cdn.shopify.com/s/files/1/0428/8312/1319/files/33723369575.pdf
    • https://cdn.shopify.com/s/files/1/0431/8363/6644/files/xekosezeravor.pdf
    • https://cdn.shopify.com/s/files/1/0434/4614/1093/files/38467034026.pdf
    • https://cdn.shopify.com/s/files/1/0432/9121/3988/files/tiziriwinanijazizuzumidi.pdf
    • https://cdn.shopify.com/s/files/1/0429/7592/0282/files/perforated_peptic_ulcer_treatment.pdf
    • https://cdn.shopify.com/s/files/1/0438/7454/9928/files/34631685674.pdf
    • https://cdn.shopify.com/s/files/1/0430/8926/4794/files/zapilixaxifoxoropa.pdf
    • https://cdn.shopify.com/s/files/1/0436/8292/2646/files/firasomalavilexujibuniwa.pdf
    • https://cdn.shopify.com/s/files/1/0431/4424/9499/files/74564061174.pdf
    • https://cdn.shopify.com/s/files/1/0428/9318/1081/files/words_will_never_hurt_me.pdf
    • https://cdn.shopify.com/s/files/1/0439/2484/8795/files/jimipe.pdf
    • https://cdn.shopify.com/s/files/1/0444/2914/8327/files/resaraworevusuniba.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
    • http://www.gnu.org/licenses/gpl.html

Extracted artifacts 4

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00006fd1.bin
d6980a15d6d3c9223b8f2c835c84cb692b50fd018bd94346f484ad9ac41f89eb		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6FD1 3676 bytes
font_01_sfnt_off00007cd2.bin
04c7e3f20af6f7929c036c5cafe40945e00de80ec8dbd2d62974e8f46adeb3b4		 pdf-font-stream PDF embedded font (sfnt) at offset 0x7CD2 4904 bytes
font_02_sfnt_off00008d85.bin
9a2bbcea58bf74aa5a39c7522fd55faa8d5e1efffd6838b0b90bd32126ac721f		 pdf-font-stream PDF embedded font (sfnt) at offset 0x8D85 8172 bytes
font_03_sfnt_off0000a407.bin
7b21255f47b593532ae3a0693f9fe0a16a2ae0e8e1741b21300e6813f1dfc2d1		 pdf-font-stream PDF embedded font (sfnt) at offset 0xA407 10420 bytes

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