Malicious PDF — malware analysis report

Static analysis result for SHA-256 6b2428a17b54b684…

MALICIOUS

PDF

42.3 KB Created: 2020-08-19 03:18:33 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 843850b116387cdf492051e84220b4a2 SHA-1: 3280ca1a243f5b2e38cf2a9a607cb0b180d345b7 SHA-256: 6b2428a17b54b684fecb1a61e4ba135ce903b867f8136bb47c7fff49cdd9bffe
154 Risk Score

Malware Insights

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

The PDF contains numerous links, including one identified as a malicious redirector pointing to 'https://ttraff.com/pify?keyword=new+flight+simulator+2018+android'. This suggests a phishing or scam attempt, likely using a lure related to a flight simulator game. The presence of many external PDF links, some hosted on Shopify, indicates a link farm or SEO poisoning tactic to distribute the malicious content. No scripts were extracted, but the PDF structure and embedded links are sufficient to infer a malicious intent.

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=new+flight+simulator+2018+android
    • http://files.newburyporthort.org/uploads/1/3/1/4/131453028/mulejunavoparepugi.pdf
    • http://files.sailingthetechseas.com/uploads/1/3/0/7/130776763/vorij.pdf
    • http://files.colletteportis.com/uploads/1/3/2/7/132740498/4836491.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://cdn.shopify.com/s/files/1/0433/3164/9689/files/apsara_sadhana_book_download.pdf
    • https://cdn.shopify.com/s/files/1/0438/6213/0848/files/vademulunedizawuzivijo.pdf
    • https://cdn.shopify.com/s/files/1/0434/1320/9246/files/bijugixasajokojezoxuj.pdf
    • https://cdn.shopify.com/s/files/1/0438/5941/1094/files/23012780810.pdf
    • https://cdn.shopify.com/s/files/1/0428/6359/1583/files/sabomedilutebememawo.pdf
    • https://cdn.shopify.com/s/files/1/0430/4220/9945/files/72653555287.pdf
    • https://cdn.shopify.com/s/files/1/0429/1769/1559/files/ubuntu_14._04_download.pdf
    • https://cdn.shopify.com/s/files/1/0437/3469/6097/files/bugoputizerobo.pdf
    • https://cdn.shopify.com/s/files/1/0432/3262/4808/files/niwepizaxebuj.pdf
    • https://cdn.shopify.com/s/files/1/0432/9078/7996/files/14627622508.pdf
    • https://cdn.shopify.com/s/files/1/0432/4160/3239/files/egyptian_architecture_history.pdf
    • https://cdn.shopify.com/s/files/1/0433/2086/9019/files/alex_s_adventures_in_numberland_archive.pdf
    • https://cdn.shopify.com/s/files/1/0431/7777/1162/files/54028991169.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_off00006593.bin
555ae3a42313aae86f595d84af9d68a876d07b854b3903fc0f594df97745f695		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6593 5904 bytes
font_01_sfnt_off0000799c.bin
6296cf4aa20899cf16fc340c4b2962763bfb2c717f738ce9c63dd1bacc347bbc		 pdf-font-stream PDF embedded font (sfnt) at offset 0x799C 10128 bytes

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