Malicious PDF — malware analysis report

Static analysis result for SHA-256 68ec1d7c57594d8a…

MALICIOUS

PDF

58.7 KB Created: 2020-08-19 03:57:20 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: c0e6efa737b6ea6fd997057ab01a14c2 SHA-1: 8e18525659432a3503816b29357dd821e7375c16 SHA-256: 68ec1d7c57594d8a8ab280442f9eecaed22b2f15b2dd2fa65f03debce7858dfb
194 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1059.007 JavaScript T1204.002 Malicious Link

The PDF contains numerous links, including one pointing to known malicious redirector infrastructure, and is flagged by ML classifiers as malicious. The heuristic 'SE_ADVANCE_FEE_SCAM_LURE' indicates the document's content is designed to trick users into believing they will receive a prize or parcel, a common tactic in advance-fee fraud. The embedded URL 'https://ttraff.cc/pify?keyword=multiple+alleles+blood+types+worksheet+answers' is likely the initial lure to a malicious site.

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.
  • Advance-fee lottery/parcel scam lure high SE_ADVANCE_FEE_SCAM_LURE
    Document contains lottery/beneficiary or prize language together with large-value draft/funds wording and parcel/courier delivery requirements. This is a classic advance-fee fraud document shape.
  • 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=multiple+alleles+blood+types+worksheet+answers
    • http://files.petalumaffa.com/uploads/1/3/1/8/131857983/nodevebigateb.pdf
    • http://papop.brendatobyphotography.com/uploads/1/3/1/8/131858156/favezegurip.pdf
    • http://nativageg.ayrtherapyandconsultancy.com/uploads/1/3/1/8/131871390/gidurozasosuboduxo.pdf
    • http://files.swmichiganbuttery.com/uploads/1/3/1/1/131164504/diguwefoliduju_sijeg_zebizelata_gobufufo.pdf
    • http://tuvutogal.milanrotaryclub.com/uploads/1/3/0/7/130775189/2289788.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://cdn.shopify.com/s/files/1/0436/6244/2646/files/botizutukubudag.pdf
    • https://cdn.shopify.com/s/files/1/0429/3174/9031/files/tovoxuzanaketagum.pdf
    • https://cdn.shopify.com/s/files/1/0432/8954/2809/files/20484997201.pdf
    • https://cdn.shopify.com/s/files/1/0436/0667/1517/files/94155791913.pdf
    • https://cdn.shopify.com/s/files/1/0434/7992/4902/files/41858290406.pdf
    • https://cdn.shopify.com/s/files/1/0432/5313/7576/files/95263914944.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/4274895189.pdf
    • https://cdn.shopify.com/s/files/1/0434/6845/6086/files/32722823560.pdf
    • https://cdn.shopify.com/s/files/1/0431/0417/4233/files/lavupaxaw.pdf
    • https://cdn.shopify.com/s/files/1/0429/7313/5011/files/fufafemojuke.pdf
    • https://cdn.shopify.com/s/files/1/0435/2638/9912/files/jowalagetokag.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/40169505762.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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00009c1d.bin
b7f317aa0f29cd34df008dc84d8f376d2685882a57a4a5cd0d86477d0adf885a		 pdf-font-stream PDF embedded font (sfnt) at offset 0x9C1D 2828 bytes
font_01_sfnt_off0000a618.bin
9466fccfb3ea6a771415ddabfb35b3252915c002ad57e6c2b152e985045e6f09		 pdf-font-stream PDF embedded font (sfnt) at offset 0xA618 5448 bytes
font_02_sfnt_off0000b8a2.bin
f21e34a073797d994e2cd5b22718a4533e00a2f1050133fbe6eb79e98968cb35		 pdf-font-stream PDF embedded font (sfnt) at offset 0xB8A2 9940 bytes

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