Malicious PDF — malware analysis report

Static analysis result for SHA-256 00268e80082ad519…

MALICIOUS

PDF

42.8 KB Created: 2020-08-25 02:11:51 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 854f6f252da206999815405fcbbdd39d SHA-1: 0e60e8eb76b988139703b7995dfd2159c4e2743d SHA-256: 00268e80082ad51966a33e671a270756f0c5a425c98b94d366b028389c8889f4
154 Risk Score

Malware Insights

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

The PDF contains a large number of embedded links, many pointing to Shopify domains, but one critical link redirects to `https://ttraff.com/pify?keyword=circulatory+system+diagrams+worksheet`. This redirector is known to be malicious. The document body, though heavily obfuscated, contains text related to 'circulatory system diagrams worksheet', suggesting a lure to disguise the malicious intent. The ML classifier also strongly indicated maliciousness.

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=circulatory+system+diagrams+worksheet
    • http://files.guybuncecomposer.co.uk/uploads/1/3/2/6/132681823/1864253.pdf
    • http://files.onesource-ph.com/uploads/1/3/0/8/130813923/f3ca9.pdf
    • http://files.reddevilphotographic.com/uploads/1/3/0/7/130776131/narozekuva.pdf
    • http://files.fideliaibekwe.info/uploads/1/3/1/4/131452929/ribabafe-zitivokorilimux-fikisujitugar-fuxajat.pdf
    • http://fukew.kouturexprice.com/uploads/1/3/1/4/131407377/491d80e3e9bc8.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://cdn.shopify.com/s/files/1/0437/3826/7809/files/myspanishlab_mosaicos_answer_key.pdf
    • https://cdn.shopify.com/s/files/1/0464/0522/2555/files/litafodix.pdf
    • https://cdn.shopify.com/s/files/1/0440/4533/6726/files/pepoxinemefojofekageviw.pdf
    • https://cdn.shopify.com/s/files/1/0431/7980/2782/files/xuxagemi.pdf
    • https://cdn.shopify.com/s/files/1/0438/4253/5574/files/77290309222.pdf
    • https://cdn.shopify.com/s/files/1/0437/3915/2535/files/wogikamoxul.pdf
    • https://cdn.shopify.com/s/files/1/0429/7926/2623/files/best_games_for_android_free_offline.pdf
    • https://cdn.shopify.com/s/files/1/0434/4391/2856/files/21953910848.pdf
    • https://cdn.shopify.com/s/files/1/0436/9724/2280/files/farifegopinafaxifisuparu.pdf
    • https://cdn.shopify.com/s/files/1/0432/1984/5278/files/bemowaraxovapi.pdf
    • https://cdn.shopify.com/s/files/1/0431/7587/0630/files/87282437121.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_off00006313.bin
946bcfc5310fcf6d8d3cdecbc34adcbb7c928b0f9015a0fe574cbbbadfd12a2c		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6313 5516 bytes
font_01_sfnt_off000075c0.bin
3d05654f06d4f07e4b7ce4ac77a7db96caa54d68ff6419347dade734dc2125d9		 pdf-font-stream PDF embedded font (sfnt) at offset 0x75C0 12668 bytes

Open this report in the interactive analyzer, or submit your own file for analysis.