Malicious PDF — malware analysis report

Static analysis result for SHA-256 00032dbd981d1810…

MALICIOUS

PDF

44.4 KB Created: 2020-08-10 01:59:24 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: f23cf0d545c66a29f58f11b0780858aa SHA-1: 16c6ed55b9cefc6894dcc4b4be9f9f4b2a642d78 SHA-256: 00032dbd981d18107373eadc8d5e3638e5ac86acbf8d6fc062cacd3ca4382c65
162 Risk Score

Malware Insights

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

The PDF document contains a link to a known malicious redirector, ttraff.cc, which is likely used to obscure the final destination of the malicious payload. The document also functions as a link farm, containing numerous external links, many of which point to benign Shopify domains, but the primary malicious link is clearly identified. The presence of invoice or payment language suggests a lure to entice users to click 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.
  • Fake invoice / payment lure low SE_INVOICE_LURE
    Document contains invoice or payment language paired with an action verb — useful context when combined with link, macro, or attachment indicators
  • 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=dynamics+ax+365+tutorial+pdf
    • http://files.qanduproductions.com/uploads/1/3/1/1/131164160/3811b004ad39.pdf
    • http://files.renibickelyoga.com/uploads/1/3/1/8/131856602/wemufubugonajo_safapivasu.pdf
    • http://rizab.8suitcases.com/uploads/1/3/0/8/130874359/fomewuwabo.pdf
    • http://files.lawrencedavidlegal.com/uploads/1/3/1/4/131408024/0832646d5aaa0f.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://cdn.shopify.com/s/files/1/0430/4653/5322/files/difference_between_austempering_and_martempering.pdf
    • https://cdn.shopify.com/s/files/1/0432/2898/7547/files/42951528614.pdf
    • https://cdn.shopify.com/s/files/1/0430/5128/6690/files/4705195492.pdf
    • https://cdn.shopify.com/s/files/1/0438/3670/2870/files/xadetarojoj.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/13170590630.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/54344474436.pdf
    • https://cdn.shopify.com/s/files/1/0429/7474/0639/files/nuxopogobelofejon.pdf
    • https://cdn.shopify.com/s/files/1/0431/2258/9853/files/wudufajupiwirux.pdf
    • https://cdn.shopify.com/s/files/1/0429/6222/3263/files/48849211810.pdf
    • https://cdn.shopify.com/s/files/1/0434/5462/7993/files/dejeku.pdf
    • https://cdn.shopify.com/s/files/1/0430/2451/5235/files/asma_ul_husna_benefits_in_urdu.pdf
    • https://cdn.shopify.com/s/files/1/0438/8651/0232/files/mekofimigud.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_off00006e04.bin
ffac9f425a6bd452095a0021e6629afd854e1e3df4a5b9c39d90c676a27c3c2c		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6E04 5912 bytes
font_01_sfnt_off0000821c.bin
1627941822195f876c709b4985b05c7fc9c80022318a5b74b05dc37b7da3ac90		 pdf-font-stream PDF embedded font (sfnt) at offset 0x821C 10244 bytes

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