Malicious PDF — malware analysis report

Static analysis result for SHA-256 310152c542aa5876…

MALICIOUS

PDF

47.3 KB Created: 2020-07-26 01:18:31 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2020-09-04
MD5: 5bd4d202546d7b6478dfd72e67f6e926 SHA-1: 54c53fed17fd15c42a6bfe73451b8f617af44dfc SHA-256: 310152c542aa5876db2630338c0e37474247e4e2940e9f52d3da1033c95cc7c6
194 Risk Score

Malware Insights

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

The PDF file contains a large number of embedded links, many of which point to a link farm hosted on Shopify. One of the primary links directs to a known malicious redirector at 'ttraff.com', which is likely used to obscure the final malicious destination. The document body, though heavily obfuscated, contains text related to car manuals, suggesting a lure to entice users to click the malicious links.

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.
  • Image lure linking to an SEO redirector (free-download phishing) high PDF_SEO_UTM_REDIRECTOR_LINK
    PDF embeds an image with little or no body text and a clickable link to a multi-word utm_term / FeedBurner-proxied SEO redirector — the 'free ebook / solution-manual / document download' phishing family that ranks for natural-language search queries and routes the user into a payload/redirect chain. The PDF carries no exploit; the risk is the linked destination. Flagged structurally (image lure + SEO redirector) so it does not depend on a ClamAV/ML signature, and regardless of how many filler text pages the lure carries.
  • 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/wb?keyword=2015%20dodge%20challenger%20manual%20vs%20automatic In PDF document text
    • http://files.fbmarion.org/uploads/1/3/1/0/131070231/1381930.pdfIn PDF document text
    • http://files.paradigmcollision.com/uploads/1/3/0/7/130738765/e77ffbda1660.pdfIn PDF document text
    • http://files.afterschoollessonplans.com/uploads/1/3/1/3/131381546/reketiripawek_tabusenini_josufik.pdfIn PDF document text
    • http://files.stmatthewsvoorheesville.com/uploads/1/3/2/6/132682282/9978343.pdfIn PDF document text
    • http://files.gtcollegegrade6.com/uploads/1/3/2/6/132682640/rusimoji.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/66691602327.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/9898/6909/files/5296027455.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/7692/7141/files/21933287748.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/7129/9999/files/22851220185.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0427/9821/9420/files/16572480807.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/7309/3288/files/jajowav.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/4925/4041/files/23409249060.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/4211/1650/files/raxupepetezajakawawe.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/9631/7845/files/kenokutupa.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/8316/2019/files/suxof.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/7220/9574/files/wujofutizuw.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/3591/7473/files/ropovikanipufu.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/3179/6634/files/12676571865.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/3293/6605/files/92881260637.pdfIn PDF document text
    • http://www.w3.org/1999/02/22-rdf-syntax-ns#In PDF document text
    • http://purl.org/dc/elements/1.1/In PDF document text
    • http://ns.adobe.com/pdf/1.3/In PDF document text
    • http://ns.adobe.com/xap/1.0/In PDF document text
    • http://ns.adobe.com/xap/1.0/mm/In PDF document text
    • http://ns.adobe.com/xap/1.0/rights/In PDF document text
    • http://scripts.sil.org/OFLIn PDF document text

Related samples 4

Ranked by shared artifacts, heuristics, extracted URLs, CVEs, and signatures.

Full JSON: related samples API

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00007977.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7977 5652 bytes
SHA-256: d41153cae5e08602c72406105796170bbfbfbf2531c01b242f6bd80cc1249024
font_01_sfnt_off00008c72.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8C72 10328 bytes
SHA-256: 7a7b230c5f311466c167a80f164fa8a4b49b1754e2963f59c3548f451173be58

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